117864502631 has 2 divisors, whose sum is σ = 117864502632. Its totient is φ = 117864502630.

The previous prime is 117864502601. The next prime is 117864502633. The reversal of 117864502631 is 136205468711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117864502631 is a prime.

It is a super-2 number, since 2×117864502631² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 117864502633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117864502633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58932251315 + 58932251316.

It is an arithmetic number, because the mean of its divisors is an integer number (58932251316).

Almost surely, 2^117864502631 is an apocalyptic number.

117864502631 is a deficient number, since it is larger than the sum of its proper divisors (1).

117864502631 is an equidigital number, since it uses as much as digits as its factorization.

117864502631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 117864502631 in words is "one hundred seventeen billion, eight hundred sixty-four million, five hundred two thousand, six hundred thirty-one".