79117817168 has 80 divisors (see below), whose sum is σ = 173670134400. Its totient is φ = 34659018240.

The previous prime is 79117817161. The next prime is 79117817173. The reversal of 79117817168 is 86171871197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79117817161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244733 + ... + 467043.

It is an arithmetic number, because the mean of its divisors is an integer number (2170876680).

Almost surely, 2^79117817168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79117817168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86835067200).

79117817168 is an abundant number, since it is smaller than the sum of its proper divisors (94552317232).

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

79117817168 is a wasteful number, since it uses less digits than its factorization.

79117817168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222420 (or 222414 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 56.

The spelling of 79117817168 in words is "seventy-nine billion, one hundred seventeen million, eight hundred seventeen thousand, one hundred sixty-eight".