117658730687 has 4 divisors (see below), whose sum is σ = 123851295480. Its totient is φ = 111466165896.

The previous prime is 117658730663. The next prime is 117658730689. The reversal of 117658730687 is 786037856711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786037856711 = 17 ⋅46237520983.

It is a cyclic number.

It is not a de Polignac number, because 117658730687 - 2²⁰ = 117657682111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117658730689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3096282368 + ... + 3096282405.

It is an arithmetic number, because the mean of its divisors is an integer number (30962823870).

Almost surely, 2^117658730687 is an apocalyptic number.

117658730687 is a deficient number, since it is larger than the sum of its proper divisors (6192564793).

117658730687 is an equidigital number, since it uses as much as digits as its factorization.

117658730687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192564792.

The product of its (nonzero) digits is 11854080, while the sum is 59.

The spelling of 117658730687 in words is "one hundred seventeen billion, six hundred fifty-eight million, seven hundred thirty thousand, six hundred eighty-seven".