85977417191373 has 6 divisors (see below), whose sum is σ = 124189602609774. Its totient is φ = 57318278127576.

The previous prime is 85977417191371. The next prime is 85977417191423. The reversal of 85977417191373 is 37319171477958.

85977417191373 is a `hidden beast` number, since 8 + 5 + 9 + 77 + 417 + 1 + 9 + 137 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 73494494389449 + 12482922801924 = 8572893^2 + 3533118^2 .

It is not a de Polignac number, because 85977417191373 - 2¹ = 85977417191371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85977417191371) 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, 4776523177290 + ... + 4776523177307.

It is an arithmetic number, because the mean of its divisors is an integer number (20698267101629).

Almost surely, 2^{85977417191373} is an apocalyptic number.

It is an amenable number.

85977417191373 is a deficient number, since it is larger than the sum of its proper divisors (38212185418401).

85977417191373 is a wasteful number, since it uses less digits than its factorization.

85977417191373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9553046354603 (or 9553046354600 counting only the distinct ones).

The product of its digits is 280052640, while the sum is 72.

The spelling of 85977417191373 in words is "eighty-five trillion, nine hundred seventy-seven billion, four hundred seventeen million, one hundred ninety-one thousand, three hundred seventy-three".