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A Sesvigintillion (1 Sesvigintillion) is 10 to the power of 81 (10^81). This is an immensely giant number!

How many zeros in a Sesvigintillion?

There are 81 zeros in a Sesvigintillion.

What's before Sesvigintillion?

A Quinvigintillion is smaller than a Sesvigintillion.

What's after Sesvigintillion?

A Septemvigintillion is larger than a Sesvigintillion.


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

Is Sesvigintillion the largest number?

Sesvigintillion 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.

Sesvigintillion written out

Sesvigintillion is written out as:


Big Numbers

This is just one of many really big numbers!

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