78885412087115 has 16 divisors (see below), whose sum is σ = 95210299320480. Its totient is φ = 62743266935040.

The previous prime is 78885412086989. The next prime is 78885412087123. The reversal of 78885412087115 is 51178021458887.

It is not a de Polignac number, because 78885412087115 - 2²⁸ = 78885143651659 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4283354 + ... + 13270943.

It is an arithmetic number, because the mean of its divisors is an integer number (5950643707530).

Almost surely, 2^{78885412087115} is an apocalyptic number.

78885412087115 is a deficient number, since it is larger than the sum of its proper divisors (16324887233365).

78885412087115 is a wasteful number, since it uses less digits than its factorization.

78885412087115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17559502.

The product of its (nonzero) digits is 40140800, while the sum is 65.

The spelling of 78885412087115 in words is "seventy-eight trillion, eight hundred eighty-five billion, four hundred twelve million, eighty-seven thousand, one hundred fifteen".