## Seseptuagintatrecentillion

A Seseptuagintatrecentillion (1 Seseptuagintatrecentillion) is 10 to the power of 1131 (10^1131). This is an excessively astronomical number!

## How many zeros in a Seseptuagintatrecentillion?

There are 1,131 zeros in a Seseptuagintatrecentillion.

## What's before Seseptuagintatrecentillion?

A Quinseptuagintatrecentillion is smaller than a Seseptuagintatrecentillion.

## What's after Seseptuagintatrecentillion?

A Septenseptuagintatrecentillion is larger than a Seseptuagintatrecentillion.

## Seseptuagintatrecentillionaire

A Seseptuagintatrecentillionaire is someone whos assets, net worth or wealth is 1 or more Seseptuagintatrecentillion. It is unlikely anyone will ever be a true Seseptuagintatrecentillionaire. If you want to be a Seseptuagintatrecentillionaire, play Tap Tales!

## Is Seseptuagintatrecentillion the largest number?

Seseptuagintatrecentillion is not the largest number. Infinity best describes the largest possible number - if there even is one! We cannot comprehend what the largest number actually is.

## Seseptuagintatrecentillion written out

Seseptuagintatrecentillion is written out as:

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

## Big Numbers

This is just one of many really big numbers!