72314636432 has 20 divisors (see below), whose sum is σ = 140129213820. Its totient is φ = 36152258688.

The previous prime is 72314636411. The next prime is 72314636441. The reversal of 72314636432 is 23463641327.

It can be written as a sum of positive squares in 2 ways, for example, as 70195323136 + 2119313296 = 264944^2 + 46036^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 72314636432.

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, 196943 + ... + 428270.

It is an arithmetic number, because the mean of its divisors is an integer number (7006460691).

Almost surely, 2^72314636432 is an apocalyptic number.

It is an amenable number.

72314636432 is a deficient number, since it is larger than the sum of its proper divisors (67814577388).

72314636432 is a wasteful number, since it uses less digits than its factorization.

72314636432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632450 (or 632444 counting only the distinct ones).

The product of its digits is 435456, while the sum is 41.

The spelling of 72314636432 in words is "seventy-two billion, three hundred fourteen million, six hundred thirty-six thousand, four hundred thirty-two".