79904040476836 has 27 divisors (see below), whose sum is σ = 148541899755459. Its totient is φ = 37601758378368.

The previous prime is 79904040476797. The next prime is 79904040476873. The reversal of 79904040476836 is 63867404040997.

The square root of 79904040476836 is 8938906.

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

It can be written as a sum of positive squares in 4 ways, for example, as 46974163212900 + 32929877263936 = 6853770^2 + 5738456^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 303791350 + ... + 304054258.

Almost surely, 2^{79904040476836} is an apocalyptic number.

79904040476836 is the 8938906-th square number.

It is an amenable number.

79904040476836 is a deficient number, since it is larger than the sum of its proper divisors (68637859278623).

79904040476836 is an frugal number, since it uses more digits than its factorization.

79904040476836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525856 (or 262928 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 67.

The spelling of 79904040476836 in words is "seventy-nine trillion, nine hundred four billion, forty million, four hundred seventy-six thousand, eight hundred thirty-six".