72569917892 has 12 divisors (see below), whose sum is σ = 127016099196. Its totient is φ = 36279603840.

The previous prime is 72569917873. The next prime is 72569917957. The reversal of 72569917892 is 29871996527.

It can be written as a sum of positive squares in 2 ways, for example, as 32239638916 + 40330278976 = 179554^2 + 200824^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1308209 + ... + 1362552.

It is an arithmetic number, because the mean of its divisors is an integer number (10584674933).

Almost surely, 2^72569917892 is an apocalyptic number.

It is an amenable number.

72569917892 is a deficient number, since it is larger than the sum of its proper divisors (54446181304).

72569917892 is a wasteful number, since it uses less digits than its factorization.

72569917892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677558 (or 2677556 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 65.

The spelling of 72569917892 in words is "seventy-two billion, five hundred sixty-nine million, nine hundred seventeen thousand, eight hundred ninety-two".