117637715539 has 2 divisors, whose sum is σ = 117637715540. Its totient is φ = 117637715538.

The previous prime is 117637715537. The next prime is 117637715551. The reversal of 117637715539 is 935517736711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117637715539 - 2¹ = 117637715537 is a prime.

Together with 117637715537, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 117637715539.

It is not a weakly prime, because it can be changed into another prime (117637715537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58818857769 + 58818857770.

It is an arithmetic number, because the mean of its divisors is an integer number (58818857770).

Almost surely, 2^117637715539 is an apocalyptic number.

117637715539 is a deficient number, since it is larger than the sum of its proper divisors (1).

117637715539 is an equidigital number, since it uses as much as digits as its factorization.

117637715539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4167450, while the sum is 55.

The spelling of 117637715539 in words is "one hundred seventeen billion, six hundred thirty-seven million, seven hundred fifteen thousand, five hundred thirty-nine".