72161503594 has 16 divisors (see below), whose sum is σ = 113018754240. Its totient is φ = 34490538720.

The previous prime is 72161503567. The next prime is 72161503597. The reversal of 72161503594 is 49530516127.

It is a self number, because there is not a number n which added to its sum of digits gives 72161503594.

It is not an unprimeable number, because it can be changed into a prime (72161503597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413472 + ... + 561499.

It is an arithmetic number, because the mean of its divisors is an integer number (7063672140).

Almost surely, 2^72161503594 is an apocalyptic number.

72161503594 is a deficient number, since it is larger than the sum of its proper divisors (40857250646).

72161503594 is a wasteful number, since it uses less digits than its factorization.

72161503594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976605.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 72161503594 in words is "seventy-two billion, one hundred sixty-one million, five hundred three thousand, five hundred ninety-four".