72856576672 has 24 divisors (see below), whose sum is σ = 156476057472. Its totient is φ = 33116625600.

The previous prime is 72856576651. The next prime is 72856576691. The reversal of 72856576672 is 27667565827.

It is a self number, because there is not a number n which added to its sum of digits gives 72856576672.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103489104 + ... + 103489807.

It is an arithmetic number, because the mean of its divisors is an integer number (6519835728).

Almost surely, 2^72856576672 is an apocalyptic number.

It is an amenable number.

72856576672 is an abundant number, since it is smaller than the sum of its proper divisors (83619480800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72856576672 is a wasteful number, since it uses less digits than its factorization.

72856576672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206978932 (or 206978924 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 61.

The spelling of 72856576672 in words is "seventy-two billion, eight hundred fifty-six million, five hundred seventy-six thousand, six hundred seventy-two".