72563840244 has 72 divisors (see below), whose sum is σ = 209687831808. Its totient is φ = 20726694720.

The previous prime is 72563840231. The next prime is 72563840263. The reversal of 72563840244 is 44204836527.

It is a happy number.

72563840244 is a `hidden beast` number, since 7 + 2 + 5 + 638 + 4 + 0 + 2 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 72563840244.

It is a congruent 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, 900574 + ... + 977834.

Almost surely, 2^72563840244 is an apocalyptic number.

It is an amenable number.

72563840244 is an abundant number, since it is smaller than the sum of its proper divisors (137123991564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72563840244 is a wasteful number, since it uses less digits than its factorization.

72563840244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81005 (or 81000 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 45.

The spelling of 72563840244 in words is "seventy-two billion, five hundred sixty-three million, eight hundred forty thousand, two hundred forty-four".