22177864832 has 24 divisors (see below), whose sum is σ = 44185821915. Its totient is φ = 11088089984.

The previous prime is 22177864801. The next prime is 22177864837. The reversal of 22177864832 is 23846877122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 11088932416 + 11088932416 = 105304^2 + 105304^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105304.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22177864837) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1678283 + ... + 1691445.

Almost surely, 2^22177864832 is an apocalyptic number.

It is an amenable number.

22177864832 is a deficient number, since it is larger than the sum of its proper divisors (22007957083).

22177864832 is an frugal number, since it uses more digits than its factorization.

22177864832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26340 (or 13165 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

Multiplying 22177864832 by its sum of digits (50), we get a square (1108893241600 = 1053040²).

The spelling of 22177864832 in words is "twenty-two billion, one hundred seventy-seven million, eight hundred sixty-four thousand, eight hundred thirty-two".