A Unquadragintacentillion (1 Unquadragintacentillion) is 10 to the power of 426 (10^426). This is an exorbitantly astronomical number!

## How many zeros in a Unquadragintacentillion?

There are 426 zeros in a Unquadragintacentillion.

## What's before Unquadragintacentillion?

A Quadragintacentillion is smaller than a Unquadragintacentillion.

## What's after Unquadragintacentillion?

A Duoquadragintacentillion is larger than a Unquadragintacentillion.

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

## Is Unquadragintacentillion the largest number?

Unquadragintacentillion 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.

## Unquadragintacentillion written out

Unquadragintacentillion 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

## Big Numbers

This is just one of many really big numbers!