85977100827 has 6 divisors (see below), whose sum is σ = 124189145652. Its totient is φ = 57318067212.

The previous prime is 85977100817. The next prime is 85977100831. The reversal of 85977100827 is 72800177958.

It is a happy number.

It is not a de Polignac number, because 85977100827 - 2⁶ = 85977100763 is a prime.

It is a super-2 number, since 2×85977100827² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85977100817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4776505593 + ... + 4776505610.

It is an arithmetic number, because the mean of its divisors is an integer number (20698190942).

Almost surely, 2^85977100827 is an apocalyptic number.

85977100827 is a deficient number, since it is larger than the sum of its proper divisors (38212044825).

85977100827 is a wasteful number, since it uses less digits than its factorization.

85977100827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9553011209 (or 9553011206 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 54.

The spelling of 85977100827 in words is "eighty-five billion, nine hundred seventy-seven million, one hundred thousand, eight hundred twenty-seven".