72665854824 has 32 divisors (see below), whose sum is σ = 184223298240. Its totient is φ = 23880796800.

The previous prime is 72665854783. The next prime is 72665854847. The reversal of 72665854824 is 42845856627.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21320437 + ... + 21323844.

It is an arithmetic number, because the mean of its divisors is an integer number (5756978070).

Almost surely, 2^72665854824 is an apocalyptic number.

It is an amenable number.

72665854824 is an abundant number, since it is smaller than the sum of its proper divisors (111557443416).

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

72665854824 is a wasteful number, since it uses less digits than its factorization.

72665854824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42644361 (or 42644357 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 57.

The spelling of 72665854824 in words is "seventy-two billion, six hundred sixty-five million, eight hundred fifty-four thousand, eight hundred twenty-four".