72257831318 has 16 divisors (see below), whose sum is σ = 108936349200. Its totient is φ = 35946172416.

The previous prime is 72257831299. The next prime is 72257831333. The reversal of 72257831318 is 81313875227.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203021 + ... + 430967.

It is an arithmetic number, because the mean of its divisors is an integer number (6808521825).

Almost surely, 2^72257831318 is an apocalyptic number.

72257831318 is a deficient number, since it is larger than the sum of its proper divisors (36678517882).

72257831318 is a wasteful number, since it uses less digits than its factorization.

72257831318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228751.

The product of its digits is 564480, while the sum is 47.

The spelling of 72257831318 in words is "seventy-two billion, two hundred fifty-seven million, eight hundred thirty-one thousand, three hundred eighteen".