117358113581 has 2 divisors, whose sum is σ = 117358113582. Its totient is φ = 117358113580.

The previous prime is 117358113563. The next prime is 117358113619. The reversal of 117358113581 is 185311853711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83931304681 + 33426808900 = 289709^2 + 182830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117358113581 is a prime.

It is a super-2 number, since 2×117358113581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117358113541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58679056790 + 58679056791.

It is an arithmetic number, because the mean of its divisors is an integer number (58679056791).

Almost surely, 2^117358113581 is an apocalyptic number.

It is an amenable number.

117358113581 is a deficient number, since it is larger than the sum of its proper divisors (1).

117358113581 is an equidigital number, since it uses as much as digits as its factorization.

117358113581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 44.

The spelling of 117358113581 in words is "one hundred seventeen billion, three hundred fifty-eight million, one hundred thirteen thousand, five hundred eighty-one".