22561641320 has 16 divisors (see below), whose sum is σ = 50763693060. Its totient is φ = 9024656512.

The previous prime is 22561641247. The next prime is 22561641343. The reversal of 22561641320 is 2314616522.

It can be written as a sum of positive squares in 2 ways, for example, as 22471808836 + 89832484 = 149906^2 + 9478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282020477 + ... + 282020556.

Almost surely, 2^22561641320 is an apocalyptic number.

22561641320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22561641320 is an abundant number, since it is smaller than the sum of its proper divisors (28202051740).

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

22561641320 is a wasteful number, since it uses less digits than its factorization.

22561641320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564041044 (or 564041040 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 22561641320 in words is "twenty-two billion, five hundred sixty-one million, six hundred forty-one thousand, three hundred twenty".