79158972108 has 24 divisors (see below), whose sum is σ = 195569225712. Its totient is φ = 24834187264.

The previous prime is 79158972041. The next prime is 79158972163. The reversal of 79158972108 is 80127985197.

It is a super-2 number, since 2×79158972108² (a number of 23 digits) contains 22 as substring.

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, 194016885 + ... + 194017292.

It is an arithmetic number, because the mean of its divisors is an integer number (8148717738).

Almost surely, 2^79158972108 is an apocalyptic number.

It is an amenable number.

79158972108 is an abundant number, since it is smaller than the sum of its proper divisors (116410253604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79158972108 is a wasteful number, since it uses less digits than its factorization.

79158972108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388034201 (or 388034199 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 57.

The spelling of 79158972108 in words is "seventy-nine billion, one hundred fifty-eight million, nine hundred seventy-two thousand, one hundred eight".