22440643632 has 60 divisors (see below), whose sum is σ = 68511969864. Its totient is φ = 6800194560.

The previous prime is 22440643579. The next prime is 22440643649. The reversal of 22440643632 is 23634604422.

22440643632 is a `hidden beast` number, since 2 + 2 + 4 + 4 + 0 + 643 + 6 + 3 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7081953 + ... + 7085120.

Almost surely, 2^22440643632 is an apocalyptic number.

22440643632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22440643632 is an abundant number, since it is smaller than the sum of its proper divisors (46071326232).

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

22440643632 is a wasteful number, since it uses less digits than its factorization.

22440643632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14167098 (or 14167089 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 22440643632 in words is "twenty-two billion, four hundred forty million, six hundred forty-three thousand, six hundred thirty-two".