79117918242 has 32 divisors (see below), whose sum is σ = 172644376320. Its totient is φ = 23971867920.

The previous prime is 79117918199. The next prime is 79117918289. The reversal of 79117918242 is 24281971197.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432109 + ... + 587327.

It is an arithmetic number, because the mean of its divisors is an integer number (5395136760).

Almost surely, 2^79117918242 is an apocalyptic number.

79117918242 is an abundant number, since it is smaller than the sum of its proper divisors (93526458078).

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

79117918242 is a wasteful number, since it uses less digits than its factorization.

79117918242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162958.

The product of its digits is 508032, while the sum is 51.

The spelling of 79117918242 in words is "seventy-nine billion, one hundred seventeen million, nine hundred eighteen thousand, two hundred forty-two".