72400585499 has 32 divisors (see below), whose sum is σ = 83040914880. Its totient is φ = 62539110400.

The previous prime is 72400585469. The next prime is 72400585511. The reversal of 72400585499 is 99458500427.

It is a cyclic number.

It is not a de Polignac number, because 72400585499 - 2³⁶ = 3681108763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 72400585499.

It is not an unprimeable number, because it can be changed into a prime (72400585409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3263657 + ... + 3285765.

It is an arithmetic number, because the mean of its divisors is an integer number (2595028590).

Almost surely, 2^72400585499 is an apocalyptic number.

72400585499 is a deficient number, since it is larger than the sum of its proper divisors (10640329381).

72400585499 is a wasteful number, since it uses less digits than its factorization.

72400585499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22351.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 72400585499 in words is "seventy-two billion, four hundred million, five hundred eighty-five thousand, four hundred ninety-nine".