22550986321920 has 624 divisors, whose sum is σ = 89381012410560. Its totient is φ = 5151796494336.

The previous prime is 22550986321883. The next prime is 22550986321937. The reversal of 22550986321920 is 2912368905522.

It is a happy number.

22550986321920 is a `hidden beast` number, since 2 + 2 + 5 + 509 + 86 + 32 + 1 + 9 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3453969216 + ... + 3453975744.

It is an arithmetic number, because the mean of its divisors is an integer number (143238801940).

Almost surely, 2^{22550986321920} is an apocalyptic number.

22550986321920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22550986321920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44690506205280).

22550986321920 is an abundant number, since it is smaller than the sum of its proper divisors (66830026088640).

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

22550986321920 is a wasteful number, since it uses less digits than its factorization.

22550986321920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9248 (or 9223 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 22550986321920 in words is "twenty-two trillion, five hundred fifty billion, nine hundred eighty-six million, three hundred twenty-one thousand, nine hundred twenty".