85877877857 has 16 divisors (see below), whose sum is σ = 90192398400. Its totient is φ = 81654323520.

The previous prime is 85877877829. The next prime is 85877877887. The reversal of 85877877857 is 75877877858.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85877877857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85877877887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11710682 + ... + 11718012.

It is an arithmetic number, because the mean of its divisors is an integer number (5637024900).

Almost surely, 2^85877877857 is an apocalyptic number.

It is an amenable number.

85877877857 is a deficient number, since it is larger than the sum of its proper divisors (4314520543).

85877877857 is a wasteful number, since it uses less digits than its factorization.

85877877857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13456.

The product of its digits is 1721036800, while the sum is 77.

Subtracting from 85877877857 its reverse (75877877858), we obtain a palindrome (9999999999).

The spelling of 85877877857 in words is "eighty-five billion, eight hundred seventy-seven million, eight hundred seventy-seven thousand, eight hundred fifty-seven".