79371515865 has 16 divisors (see below), whose sum is σ = 128421331200. Its totient is φ = 41855839872.

The previous prime is 79371515843. The next prime is 79371515921. The reversal of 79371515865 is 56851517397.

It is a happy number.

It is not a de Polignac number, because 79371515865 - 2⁶ = 79371515801 is a prime.

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, 29725825 + ... + 29728494.

It is an arithmetic number, because the mean of its divisors is an integer number (8026333200).

Almost surely, 2^79371515865 is an apocalyptic number.

It is an amenable number.

79371515865 is a deficient number, since it is larger than the sum of its proper divisors (49049815335).

79371515865 is a wasteful number, since it uses less digits than its factorization.

79371515865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59454416.

The product of its digits is 7938000, while the sum is 57.

The spelling of 79371515865 in words is "seventy-nine billion, three hundred seventy-one million, five hundred fifteen thousand, eight hundred sixty-five".