79846640404 has 12 divisors (see below), whose sum is σ = 140080081428. Its totient is φ = 39823760000.

The previous prime is 79846640389. The next prime is 79846640429. The reversal of 79846640404 is 40404664897.

It can be written as a sum of positive squares in 2 ways, for example, as 78401120004 + 1445520400 = 280002^2 + 38020^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24888247 + ... + 24891454.

It is an arithmetic number, because the mean of its divisors is an integer number (11673340119).

Almost surely, 2^79846640404 is an apocalyptic number.

It is an amenable number.

79846640404 is a deficient number, since it is larger than the sum of its proper divisors (60233441024).

79846640404 is a wasteful number, since it uses less digits than its factorization.

79846640404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49780106 (or 49780104 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 52.

The spelling of 79846640404 in words is "seventy-nine billion, eight hundred forty-six million, six hundred forty thousand, four hundred four".