79715669012 has 18 divisors (see below), whose sum is σ = 162278326602. Its totient is φ = 34163858064.

The previous prime is 79715669009. The next prime is 79715669021. The reversal of 79715669012 is 21096651797.

It can be written as a sum of positive squares in only one way, i.e., 49388839696 + 30326829316 = 222236^2 + 174146^2 .

It is a super-2 number, since 2×79715669012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203356103 + ... + 203356494.

It is an arithmetic number, because the mean of its divisors is an integer number (9015462589).

Almost surely, 2^79715669012 is an apocalyptic number.

It is an amenable number.

79715669012 is an abundant number, since it is smaller than the sum of its proper divisors (82562657590).

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

79715669012 is a wasteful number, since it uses less digits than its factorization.

79715669012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406712615 (or 406712606 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 53.

The spelling of 79715669012 in words is "seventy-nine billion, seven hundred fifteen million, six hundred sixty-nine thousand, twelve".