72563706564 has 24 divisors (see below), whose sum is σ = 169944747840. Its totient is φ = 24097983264.

The previous prime is 72563706563. The next prime is 72563706587. The reversal of 72563706564 is 46560736527.

It is not an unprimeable number, because it can be changed into a prime (72563706563) 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, 11236504 + ... + 11242959.

It is an arithmetic number, because the mean of its divisors is an integer number (7081031160).

Almost surely, 2^72563706564 is an apocalyptic number.

It is an amenable number.

72563706564 is an abundant number, since it is smaller than the sum of its proper divisors (97381041276).

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

72563706564 is a wasteful number, since it uses less digits than its factorization.

72563706564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22479739 (or 22479737 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 51.

The spelling of 72563706564 in words is "seventy-two billion, five hundred sixty-three million, seven hundred six thousand, five hundred sixty-four".