79979233636 has 9 divisors (see below), whose sum is σ = 139964648691. Its totient is φ = 39989334012.

The previous prime is 79979233601. The next prime is 79979233637. The reversal of 79979233636 is 63633297997.

The square root of 79979233636 is 282806.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79979233637) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 494911 + ... + 636313.

Almost surely, 2^79979233636 is an apocalyptic number.

79979233636 is the 282806-th square number.

It is an amenable number.

79979233636 is a deficient number, since it is larger than the sum of its proper divisors (59985415055).

79979233636 is an frugal number, since it uses more digits than its factorization.

79979233636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282810 (or 141405 counting only the distinct ones).

The product of its digits is 69441624, while the sum is 64.

Multiplying 79979233636 by its sum of digits (64), we get a square (5118670952704 = 2262448²).

The spelling of 79979233636 in words is "seventy-nine billion, nine hundred seventy-nine million, two hundred thirty-three thousand, six hundred thirty-six".