85865512735278 has 12 divisors (see below), whose sum is σ = 186041944259808. Its totient is φ = 28621837578420.

The previous prime is 85865512735183. The next prime is 85865512735291. The reversal of 85865512735278 is 87253721556858.

85865512735278 is a `hidden beast` number, since 8 + 5 + 8 + 6 + 5 + 512 + 7 + 35 + 2 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2385153131518 + ... + 2385153131553.

It is an arithmetic number, because the mean of its divisors is an integer number (15503495354984).

Almost surely, 2^{85865512735278} is an apocalyptic number.

85865512735278 is an abundant number, since it is smaller than the sum of its proper divisors (100176431524530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85865512735278 is a wasteful number, since it uses less digits than its factorization.

85865512735278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770306263079 (or 4770306263076 counting only the distinct ones).

The product of its digits is 1128960000, while the sum is 72.

The spelling of 85865512735278 in words is "eighty-five trillion, eight hundred sixty-five billion, five hundred twelve million, seven hundred thirty-five thousand, two hundred seventy-eight".