8563422156 has 24 divisors (see below), whose sum is σ = 20082751920. Its totient is φ = 2839983552.

The previous prime is 8563422149. The next prime is 8563422173. The reversal of 8563422156 is 6512243658.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808851 + ... + 1813578.

It is an arithmetic number, because the mean of its divisors is an integer number (836781330).

Almost surely, 2^8563422156 is an apocalyptic number.

It is an amenable number.

8563422156 is an abundant number, since it is smaller than the sum of its proper divisors (11519329764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8563422156 is a wasteful number, since it uses less digits than its factorization.

8563422156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622633 (or 3622631 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 8563422156 is about 92538.7602899455. The cubic root of 8563422156 is about 2045.8908094298.

The spelling of 8563422156 in words is "eight billion, five hundred sixty-three million, four hundred twenty-two thousand, one hundred fifty-six".