85877846139 has 4 divisors (see below), whose sum is σ = 114503794856. Its totient is φ = 57251897424.

The previous prime is 85877846137. The next prime is 85877846147. The reversal of 85877846139 is 93164877858.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85877846139 - 2¹ = 85877846137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85877846139.

It is not an unprimeable number, because it can be changed into a prime (85877846137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14312974354 + ... + 14312974359.

It is an arithmetic number, because the mean of its divisors is an integer number (28625948714).

Almost surely, 2^85877846139 is an apocalyptic number.

85877846139 is a deficient number, since it is larger than the sum of its proper divisors (28625948717).

85877846139 is a wasteful number, since it uses less digits than its factorization.

85877846139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28625948716.

The product of its digits is 81285120, while the sum is 66.

The spelling of 85877846139 in words is "eighty-five billion, eight hundred seventy-seven million, eight hundred forty-six thousand, one hundred thirty-nine".