72140624738 has 48 divisors (see below), whose sum is σ = 134301913920. Its totient is φ = 28456579008.

The previous prime is 72140624719. The next prime is 72140624747. The reversal of 72140624738 is 83742604127.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 777068 + ... + 864936.

It is an arithmetic number, because the mean of its divisors is an integer number (2797956540).

Almost surely, 2^72140624738 is an apocalyptic number.

72140624738 is a deficient number, since it is larger than the sum of its proper divisors (62161289182).

72140624738 is a wasteful number, since it uses less digits than its factorization.

72140624738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88251 (or 88238 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 72140624738 in words is "seventy-two billion, one hundred forty million, six hundred twenty-four thousand, seven hundred thirty-eight".