22656857871 has 24 divisors (see below), whose sum is σ = 31859409456. Its totient is φ = 14319880960.

The previous prime is 22656857837. The next prime is 22656857891. The reversal of 22656857871 is 17875865622.

It is not a de Polignac number, because 22656857871 - 2¹⁰ = 22656856847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22656857891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116161 + ... + 242501.

It is an arithmetic number, because the mean of its divisors is an integer number (1327475394).

Almost surely, 2^22656857871 is an apocalyptic number.

22656857871 is a deficient number, since it is larger than the sum of its proper divisors (9202551585).

22656857871 is a wasteful number, since it uses less digits than its factorization.

22656857871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126503 (or 126480 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 57.

The spelling of 22656857871 in words is "twenty-two billion, six hundred fifty-six million, eight hundred fifty-seven thousand, eight hundred seventy-one".