72747094732 has 24 divisors (see below), whose sum is σ = 141827893200. Its totient is φ = 32417802816.

The previous prime is 72747094723. The next prime is 72747094757. The reversal of 72747094732 is 23749074727.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 72747094732.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24118882 + ... + 24121897.

It is an arithmetic number, because the mean of its divisors is an integer number (5909495550).

Almost surely, 2^72747094732 is an apocalyptic number.

It is an amenable number.

72747094732 is a deficient number, since it is larger than the sum of its proper divisors (69080798468).

72747094732 is a wasteful number, since it uses less digits than its factorization.

72747094732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48240825 (or 48240823 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 52.

The spelling of 72747094732 in words is "seventy-two billion, seven hundred forty-seven million, ninety-four thousand, seven hundred thirty-two".