22023858564 has 144 divisors (see below), whose sum is σ = 61859790720. Its totient is φ = 6571361280.

The previous prime is 22023858559. The next prime is 22023858583. The reversal of 22023858564 is 46585832022.

22023858564 is a `hidden beast` number, since 2 + 2 + 0 + 2 + 3 + 8 + 585 + 64 = 666.

It is a super-2 number, since 2×22023858564² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2515234 + ... + 2523974.

It is an arithmetic number, because the mean of its divisors is an integer number (429581880).

Almost surely, 2^22023858564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22023858564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30929895360).

22023858564 is an abundant number, since it is smaller than the sum of its proper divisors (39835932156).

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

22023858564 is a wasteful number, since it uses less digits than its factorization.

22023858564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8970 (or 8965 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 22023858564 in words is "twenty-two billion, twenty-three million, eight hundred fifty-eight thousand, five hundred sixty-four".