72550544247736 has 64 divisors (see below), whose sum is σ = 143558079667200. Its totient is φ = 34306152566400.

The previous prime is 72550544247683. The next prime is 72550544247757. The reversal of 72550544247736 is 63774244505527.

It is a super-2 number, since 2×72550544247736² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978870 + ... + 12085498.

It is an arithmetic number, because the mean of its divisors is an integer number (2243094994800).

Almost surely, 2^{72550544247736} is an apocalyptic number.

It is an amenable number.

72550544247736 is a deficient number, since it is larger than the sum of its proper divisors (71007535419464).

72550544247736 is a wasteful number, since it uses less digits than its factorization.

72550544247736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11107060 (or 11107056 counting only the distinct ones).

The product of its (nonzero) digits is 197568000, while the sum is 61.

The spelling of 72550544247736 in words is "seventy-two trillion, five hundred fifty billion, five hundred forty-four million, two hundred forty-seven thousand, seven hundred thirty-six".