79320836865 has 32 divisors (see below), whose sum is σ = 127583963136. Its totient is φ = 42081405120.

The previous prime is 79320836783. The next prime is 79320836867. The reversal of 79320836865 is 56863802397.

It is not a de Polignac number, because 79320836865 - 2¹⁸ = 79320574721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79320836867) 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, 2598622 + ... + 2628968.

It is an arithmetic number, because the mean of its divisors is an integer number (3986998848).

Almost surely, 2^79320836865 is an apocalyptic number.

It is an amenable number.

79320836865 is a deficient number, since it is larger than the sum of its proper divisors (48263126271).

79320836865 is a wasteful number, since it uses less digits than its factorization.

79320836865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31269.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 79320836865 in words is "seventy-nine billion, three hundred twenty million, eight hundred thirty-six thousand, eight hundred sixty-five".