79315891308 has 48 divisors (see below), whose sum is σ = 206091900000. Its totient is φ = 26379730944.

The previous prime is 79315891147. The next prime is 79315891321. The reversal of 79315891308 is 80319851397.

It is a super-2 number, since 2×79315891308² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 769333 + ... + 866316.

It is an arithmetic number, because the mean of its divisors is an integer number (4293581250).

Almost surely, 2^79315891308 is an apocalyptic number.

It is an amenable number.

79315891308 is an abundant number, since it is smaller than the sum of its proper divisors (126776008692).

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

79315891308 is a wasteful number, since it uses less digits than its factorization.

79315891308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636111 (or 1636103 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 79315891308 in words is "seventy-nine billion, three hundred fifteen million, eight hundred ninety-one thousand, three hundred eight".