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A Sesviginticentillion (1 Sesviginticentillion) is 10 to the power of 381 (10^381). This is an excessively astronomical number!

How many zeros in a Sesviginticentillion?

There are 381 zeros in a Sesviginticentillion.

What's before Sesviginticentillion?

A Quinviginticentillion is smaller than a Sesviginticentillion.

What's after Sesviginticentillion?

A Septemviginticentillion is larger than a Sesviginticentillion.


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

Is Sesviginticentillion the largest number?

Sesviginticentillion 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.

Sesviginticentillion written out

Sesviginticentillion is written out as:


Big Numbers

This is just one of many really big numbers!

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