72616681892 has 12 divisors (see below), whose sum is σ = 130034523696. Its totient is φ = 35463960840.

The previous prime is 72616681883. The next prime is 72616681909. The reversal of 72616681892 is 29818661627.

It is a happy number.

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, 211094834 + ... + 211095177.

It is an arithmetic number, because the mean of its divisors is an integer number (10836210308).

Almost surely, 2^72616681892 is an apocalyptic number.

It is an amenable number.

72616681892 is a deficient number, since it is larger than the sum of its proper divisors (57417841804).

72616681892 is a wasteful number, since it uses less digits than its factorization.

72616681892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422190058 (or 422190056 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The spelling of 72616681892 in words is "seventy-two billion, six hundred sixteen million, six hundred eighty-one thousand, eight hundred ninety-two".