A Sestrigintaducentillion (1 Sestrigintaducentillion) is 10 to the power of 711 (10^711). This is an excessively astronomical number!

## How many zeros in a Sestrigintaducentillion?

There are 711 zeros in a Sestrigintaducentillion.

## What's before Sestrigintaducentillion?

A Quintrigintaducentillion is smaller than a Sestrigintaducentillion.

## What's after Sestrigintaducentillion?

A Septentrigintaducentillion is larger than a Sestrigintaducentillion.

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

## Is Sestrigintaducentillion the largest number?

Sestrigintaducentillion 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.

## Sestrigintaducentillion written out

Sestrigintaducentillion 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

## Big Numbers

This is just one of many really big numbers!