72511128324 has 72 divisors (see below), whose sum is σ = 184950147200. Its totient is φ = 23952583872.

The previous prime is 72511128323. The next prime is 72511128353. The reversal of 72511128324 is 42382111527.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (72511128323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2030229 + ... + 2065635.

Almost surely, 2^72511128324 is an apocalyptic number.

It is an amenable number.

72511128324 is an abundant number, since it is smaller than the sum of its proper divisors (112439018876).

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

72511128324 is a wasteful number, since it uses less digits than its factorization.

72511128324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35929 (or 35924 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The spelling of 72511128324 in words is "seventy-two billion, five hundred eleven million, one hundred twenty-eight thousand, three hundred twenty-four".