72715974224 has 20 divisors (see below), whose sum is σ = 144163647936. Its totient is φ = 35512452192.

The previous prime is 72715974217. The next prime is 72715974239. The reversal of 72715974224 is 42247951727.

It is a super-2 number, since 2×72715974224² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent 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, 52845224 + ... + 52846599.

Almost surely, 2^72715974224 is an apocalyptic number.

It is an amenable number.

72715974224 is a deficient number, since it is larger than the sum of its proper divisors (71447673712).

72715974224 is a wasteful number, since it uses less digits than its factorization.

72715974224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105691874 (or 105691868 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 50.

The spelling of 72715974224 in words is "seventy-two billion, seven hundred fifteen million, nine hundred seventy-four thousand, two hundred twenty-four".