22442586640 has 40 divisors (see below), whose sum is σ = 52186010328. Its totient is φ = 8975831040.

The previous prime is 22442586631. The next prime is 22442586653. The reversal of 22442586640 is 4668524422.

It can be written as a sum of positive squares in 4 ways, for example, as 557526544 + 21885060096 = 23612^2 + 147936^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 806560 + ... + 833920.

Almost surely, 2^22442586640 is an apocalyptic number.

22442586640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22442586640 is an abundant number, since it is smaller than the sum of its proper divisors (29743423688).

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

22442586640 is a wasteful number, since it uses less digits than its factorization.

22442586640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37627 (or 37621 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 43.

The spelling of 22442586640 in words is "twenty-two billion, four hundred forty-two million, five hundred eighty-six thousand, six hundred forty".