72009515624 has 16 divisors (see below), whose sum is σ = 136726929600. Its totient is φ = 35549001072.

The previous prime is 72009515623. The next prime is 72009515647. The reversal of 72009515624 is 42651590027.

It is not an unprimeable number, because it can be changed into a prime (72009515623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56968922 + ... + 56970185.

It is an arithmetic number, because the mean of its divisors is an integer number (8545433100).

Almost surely, 2^72009515624 is an apocalyptic number.

It is an amenable number.

72009515624 is a deficient number, since it is larger than the sum of its proper divisors (64717413976).

72009515624 is a wasteful number, since it uses less digits than its factorization.

72009515624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113939192 (or 113939188 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 72009515624 in words is "seventy-two billion, nine million, five hundred fifteen thousand, six hundred twenty-four".