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A Sexcentillion (1 Sexcentillion) is 10 to the power of 321 (10^321). This is an excessively astronomical number!

How many zeros in a Sexcentillion?

There are 321 zeros in a Sexcentillion.

What's before Sexcentillion?

A Quincentillion is smaller than a Sexcentillion.

What's after Sexcentillion?

A Septencentillion is larger than a Sexcentillion.


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

Is Sexcentillion the largest number?

Sexcentillion 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.

Sexcentillion written out

Sexcentillion is written out as:


Big Numbers

This is just one of many really big numbers!

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