22640665188720 has 40 divisors (see below), whose sum is σ = 70186062085776. Its totient is φ = 6037510716928.

The previous prime is 22640665188683. The next prime is 22640665188733. The reversal of 22640665188720 is 2788156604622.

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

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 47168052237 + ... + 47168052716.

Almost surely, 2^{22640665188720} is an apocalyptic number.

22640665188720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22640665188720 is an abundant number, since it is smaller than the sum of its proper divisors (47545396897056).

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

22640665188720 is a wasteful number, since it uses less digits than its factorization.

22640665188720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94336104969 (or 94336104963 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 57.

The spelling of 22640665188720 in words is "twenty-two trillion, six hundred forty billion, six hundred sixty-five million, one hundred eighty-eight thousand, seven hundred twenty".