79172558848 has 112 divisors (see below), whose sum is σ = 168094298304. Its totient is φ = 37158912000.

The previous prime is 79172558827. The next prime is 79172558849. The reversal of 79172558848 is 84885527197.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 79172558848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79172558849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104586886 + ... + 104587642.

Almost surely, 2^79172558848 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 79172558848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84047149152).

79172558848 is an abundant number, since it is smaller than the sum of its proper divisors (88921739456).

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

79172558848 is an equidigital number, since it uses as much as digits as its factorization.

79172558848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1527 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 64.

The spelling of 79172558848 in words is "seventy-nine billion, one hundred seventy-two million, five hundred fifty-eight thousand, eight hundred forty-eight".