79227718155 has 24 divisors (see below), whose sum is σ = 137336910048. Its totient is φ = 42252055296.

The previous prime is 79227718151. The next prime is 79227718181. The reversal of 79227718155 is 55181772297.

It is not a de Polignac number, because 79227718155 - 2² = 79227718151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79227718151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 785059 + ... + 880211.

It is an arithmetic number, because the mean of its divisors is an integer number (5722371252).

Almost surely, 2^79227718155 is an apocalyptic number.

79227718155 is a deficient number, since it is larger than the sum of its proper divisors (58109191893).

79227718155 is a wasteful number, since it uses less digits than its factorization.

79227718155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113667 (or 113664 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 54.

The spelling of 79227718155 in words is "seventy-nine billion, two hundred twenty-seven million, seven hundred eighteen thousand, one hundred fifty-five".