22640664652 has 36 divisors (see below), whose sum is σ = 41514771760. Its totient is φ = 10803035232.

The previous prime is 22640664647. The next prime is 22640664659. The reversal of 22640664652 is 25646604622.

It is a super-2 number, since 2×22640664652² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22640664599 and 22640664608.

It is not an unprimeable number, because it can be changed into a prime (22640664659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 916738 + ... + 941110.

Almost surely, 2^22640664652 is an apocalyptic number.

It is an amenable number.

22640664652 is a deficient number, since it is larger than the sum of its proper divisors (18874107108).

22640664652 is a wasteful number, since it uses less digits than its factorization.

22640664652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24862 (or 24837 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 22640664652 in words is "twenty-two billion, six hundred forty million, six hundred sixty-four thousand, six hundred fifty-two".