22644105972 has 24 divisors (see below), whose sum is σ = 53702416992. Its totient is φ = 7424296800.

The previous prime is 22644105971. The next prime is 22644106003. The reversal of 22644105972 is 27950144622.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644105971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15466554 + ... + 15468017.

It is an arithmetic number, because the mean of its divisors is an integer number (2237600708).

Almost surely, 2^22644105972 is an apocalyptic number.

It is an amenable number.

22644105972 is an abundant number, since it is smaller than the sum of its proper divisors (31058311020).

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

22644105972 is a wasteful number, since it uses less digits than its factorization.

22644105972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30934639 (or 30934637 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 22644105972 in words is "twenty-two billion, six hundred forty-four million, one hundred five thousand, nine hundred seventy-two".