79299358138 has 64 divisors (see below), whose sum is σ = 159759371520. Its totient is φ = 28510041600.

The previous prime is 79299358133. The next prime is 79299358211. The reversal of 79299358138 is 83185399297.

It is a self number, because there is not a number n which added to its sum of digits gives 79299358138.

It is not an unprimeable number, because it can be changed into a prime (79299358133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10528758 + ... + 10536286.

It is an arithmetic number, because the mean of its divisors is an integer number (2496240180).

Almost surely, 2^79299358138 is an apocalyptic number.

79299358138 is an abundant number, since it is smaller than the sum of its proper divisors (80460013382).

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

79299358138 is a wasteful number, since it uses less digits than its factorization.

79299358138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12823.

The product of its digits is 29393280, while the sum is 64.

The spelling of 79299358138 in words is "seventy-nine billion, two hundred ninety-nine million, three hundred fifty-eight thousand, one hundred thirty-eight".