22621621564 has 12 divisors (see below), whose sum is σ = 40952935800. Its totient is φ = 10920782768.

The previous prime is 22621621543. The next prime is 22621621613. The reversal of 22621621564 is 46512612622.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97506874 + ... + 97507105.

It is an arithmetic number, because the mean of its divisors is an integer number (3412744650).

Almost surely, 2^22621621564 is an apocalyptic number.

It is an amenable number.

22621621564 is a deficient number, since it is larger than the sum of its proper divisors (18331314236).

22621621564 is a wasteful number, since it uses less digits than its factorization.

22621621564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195014012 (or 195014010 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The spelling of 22621621564 in words is "twenty-two billion, six hundred twenty-one million, six hundred twenty-one thousand, five hundred sixty-four".