22644960820 has 48 divisors (see below), whose sum is σ = 47915683200. Its totient is φ = 8989335936.

The previous prime is 22644960773. The next prime is 22644960829. The reversal of 22644960820 is 2806944622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644960829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2417506 + ... + 2426854.

It is an arithmetic number, because the mean of its divisors is an integer number (998243400).

Almost surely, 2^22644960820 is an apocalyptic number.

22644960820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22644960820 is an abundant number, since it is smaller than the sum of its proper divisors (25270722380).

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

22644960820 is a wasteful number, since it uses less digits than its factorization.

22644960820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264 (or 10262 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 22644960820 in words is "twenty-two billion, six hundred forty-four million, nine hundred sixty thousand, eight hundred twenty".