517136859831 has 16 divisors (see below), whose sum is σ = 719572230144. Its totient is φ = 329732925984.

The previous prime is 517136859791. The next prime is 517136859853. The reversal of 517136859831 is 138958631715.

It is a happy number.

517136859831 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 517136859831 - 2²² = 517132665527 is a prime.

It is a super-2 number, since 2×517136859831² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517136851831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249610 + ... + 1047176.

It is an arithmetic number, because the mean of its divisors is an integer number (44973264384).

Almost surely, 2^517136859831 is an apocalyptic number.

517136859831 is a deficient number, since it is larger than the sum of its proper divisors (202435370313).

517136859831 is a wasteful number, since it uses less digits than its factorization.

517136859831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806990.

The product of its digits is 5443200, while the sum is 57.

The spelling of 517136859831 in words is "five hundred seventeen billion, one hundred thirty-six million, eight hundred fifty-nine thousand, eight hundred thirty-one".