72873213624 has 112 divisors (see below), whose sum is σ = 215644746600. Its totient is φ = 23012558784.

The previous prime is 72873213607. The next prime is 72873213653. The reversal of 72873213624 is 42631237827.

72873213624 is a `hidden beast` number, since 7 + 2 + 8 + 7 + 3 + 2 + 13 + 624 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 72873213624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 218019 + ... + 439634.

Almost surely, 2^72873213624 is an apocalyptic number.

It is an amenable number.

72873213624 is an abundant number, since it is smaller than the sum of its proper divisors (142771532976).

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

72873213624 is a wasteful number, since it uses less digits than its factorization.

72873213624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657696 (or 657677 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The spelling of 72873213624 in words is "seventy-two billion, eight hundred seventy-three million, two hundred thirteen thousand, six hundred twenty-four".