115717961715 has 32 divisors (see below), whose sum is σ = 188347991040. Its totient is φ = 60650509056.

The previous prime is 115717961659. The next prime is 115717961729. The reversal of 115717961715 is 517169717511.

It is a happy number.

It is not a de Polignac number, because 115717961715 - 2²⁵ = 115684407283 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2938999 + ... + 2978111.

It is an arithmetic number, because the mean of its divisors is an integer number (5885874720).

Almost surely, 2^115717961715 is an apocalyptic number.

115717961715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115717961715 is a deficient number, since it is larger than the sum of its proper divisors (72630029325).

115717961715 is a wasteful number, since it uses less digits than its factorization.

115717961715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42523.

The product of its digits is 463050, while the sum is 51.

The spelling of 115717961715 in words is "one hundred fifteen billion, seven hundred seventeen million, nine hundred sixty-one thousand, seven hundred fifteen".