72912401944 has 16 divisors (see below), whose sum is σ = 136714264920. Its totient is φ = 36455264640.

The previous prime is 72912401921. The next prime is 72912401981. The reversal of 72912401944 is 44910421927.

It is a self number, because there is not a number n which added to its sum of digits gives 72912401944.

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, 302272 + ... + 487024.

Almost surely, 2^72912401944 is an apocalyptic number.

It is an amenable number.

72912401944 is a deficient number, since it is larger than the sum of its proper divisors (63801862976).

72912401944 is a wasteful number, since it uses less digits than its factorization.

72912401944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234090 (or 234086 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 72912401944 in words is "seventy-two billion, nine hundred twelve million, four hundred one thousand, nine hundred forty-four".