22250644992 has 120 divisors (see below), whose sum is σ = 65270428080. Its totient is φ = 7295201280.

The previous prime is 22250644943. The next prime is 22250645003. The reversal of 22250644992 is 29944605222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241509 + ... + 320667.

It is an arithmetic number, because the mean of its divisors is an integer number (543920234).

Almost surely, 2^22250644992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22250644992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32635214040).

22250644992 is an abundant number, since it is smaller than the sum of its proper divisors (43019783088).

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

22250644992 is an equidigital number, since it uses as much as digits as its factorization.

22250644992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79244 (or 79225 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 22250644992 in words is "twenty-two billion, two hundred fifty million, six hundred forty-four thousand, nine hundred ninety-two".