79679678956 has 24 divisors (see below), whose sum is σ = 141195640320. Its totient is φ = 39338586192.

The previous prime is 79679678921. The next prime is 79679678977. The reversal of 79679678956 is 65987697697.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559965 + ... + 687691.

It is an arithmetic number, because the mean of its divisors is an integer number (5883151680).

Almost surely, 2^79679678956 is an apocalyptic number.

It is an amenable number.

79679678956 is a deficient number, since it is larger than the sum of its proper divisors (61515961364).

79679678956 is a wasteful number, since it uses less digits than its factorization.

79679678956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129693 (or 129691 counting only the distinct ones).

The product of its digits is 2160406080, while the sum is 79.

The spelling of 79679678956 in words is "seventy-nine billion, six hundred seventy-nine million, six hundred seventy-eight thousand, nine hundred fifty-six".