22720521944 has 16 divisors (see below), whose sum is σ = 42603302400. Its totient is φ = 11359641312.

The previous prime is 22720521919. The next prime is 22720521959. The reversal of 22720521944 is 44912502722.

It is a junction number, because it is equal to n+sod(n) for n = 22720521898 and 22720521907.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 103142 + ... + 236810.

It is an arithmetic number, because the mean of its divisors is an integer number (2662706400).

Almost surely, 2^22720521944 is an apocalyptic number.

It is an amenable number.

22720521944 is a deficient number, since it is larger than the sum of its proper divisors (19882780456).

22720521944 is a wasteful number, since it uses less digits than its factorization.

22720521944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154922 (or 154918 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 22720521944 in words is "twenty-two billion, seven hundred twenty million, five hundred twenty-one thousand, nine hundred forty-four".