72715550752 has 24 divisors (see below), whose sum is σ = 154170952236. Its totient is φ = 33561023232.

The previous prime is 72715550723. The next prime is 72715550773. The reversal of 72715550752 is 25705551727.

It can be written as a sum of positive squares in 2 ways, for example, as 72488023696 + 227527056 = 269236^2 + 15084^2 .

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, 87398083 + ... + 87398914.

Almost surely, 2^72715550752 is an apocalyptic number.

It is an amenable number.

72715550752 is an abundant number, since it is smaller than the sum of its proper divisors (81455401484).

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

72715550752 is a wasteful number, since it uses less digits than its factorization.

72715550752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174797020 (or 174797012 counting only the distinct ones).

The product of its (nonzero) digits is 857500, while the sum is 46.

The spelling of 72715550752 in words is "seventy-two billion, seven hundred fifteen million, five hundred fifty thousand, seven hundred fifty-two".