72456139475 has 24 divisors (see below), whose sum is σ = 94682712240. Its totient is φ = 54851195520.

The previous prime is 72456139447. The next prime is 72456139507. The reversal of 72456139475 is 57493165427.

It is not a de Polignac number, because 72456139475 - 2⁶ = 72456139411 is a prime.

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, 329609 + ... + 503541.

It is an arithmetic number, because the mean of its divisors is an integer number (3945113010).

Almost surely, 2^72456139475 is an apocalyptic number.

72456139475 is a deficient number, since it is larger than the sum of its proper divisors (22226572765).

72456139475 is a wasteful number, since it uses less digits than its factorization.

72456139475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174839 (or 174834 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 53.

The spelling of 72456139475 in words is "seventy-two billion, four hundred fifty-six million, one hundred thirty-nine thousand, four hundred seventy-five".