72115450432 has 28 divisors (see below), whose sum is σ = 143113566960. Its totient is φ = 36055339136.

The previous prime is 72115450397. The next prime is 72115450447. The reversal of 72115450432 is 23405451127.

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, 1321023 + ... + 1374529.

It is an arithmetic number, because the mean of its divisors is an integer number (5111198820).

Almost surely, 2^72115450432 is an apocalyptic number.

It is an amenable number.

72115450432 is a deficient number, since it is larger than the sum of its proper divisors (70998116528).

72115450432 is a wasteful number, since it uses less digits than its factorization.

72115450432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74578 (or 74568 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 72115450432 in words is "seventy-two billion, one hundred fifteen million, four hundred fifty thousand, four hundred thirty-two".