117515522591 has 2 divisors, whose sum is σ = 117515522592. Its totient is φ = 117515522590.

The previous prime is 117515522587. The next prime is 117515522623. The reversal of 117515522591 is 195225515711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117515522591 - 2² = 117515522587 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117515522561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58757761295 + 58757761296.

It is an arithmetic number, because the mean of its divisors is an integer number (58757761296).

Almost surely, 2^117515522591 is an apocalyptic number.

117515522591 is a deficient number, since it is larger than the sum of its proper divisors (1).

117515522591 is an equidigital number, since it uses as much as digits as its factorization.

117515522591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157500, while the sum is 44.

The spelling of 117515522591 in words is "one hundred seventeen billion, five hundred fifteen million, five hundred twenty-two thousand, five hundred ninety-one".