731579975137 has 12 divisors (see below), whose sum is σ = 805384042960. Its totient is φ = 664038306360.

The previous prime is 731579975117. The next prime is 731579975143.

731579975137 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-731579975137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731579975117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4623687 + ... + 4779292.

Almost surely, 2^731579975137 is an apocalyptic number.

It is an amenable number.

731579975137 is a deficient number, since it is larger than the sum of its proper divisors (73804067823).

731579975137 is a wasteful number, since it uses less digits than its factorization.

731579975137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9403644 (or 9403633 counting only the distinct ones).

The product of its digits is 43758225, while the sum is 64.

The spelling of 731579975137 in words is "seven hundred thirty-one billion, five hundred seventy-nine million, nine hundred seventy-five thousand, one hundred thirty-seven".