22561523712 has 288 divisors, whose sum is σ = 80205128640. Its totient is φ = 5949849600.

The previous prime is 22561523689. The next prime is 22561523717. The reversal of 22561523712 is 21732516522.

22561523712 is a `hidden beast` number, since 2 + 2 + 5 + 61 + 523 + 71 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22561523717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1670587 + ... + 1684037.

It is an arithmetic number, because the mean of its divisors is an integer number (278490030).

Almost surely, 2^22561523712 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 22561523712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40102564320).

22561523712 is an abundant number, since it is smaller than the sum of its proper divisors (57643604928).

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

22561523712 is a wasteful number, since it uses less digits than its factorization.

22561523712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13499 (or 13476 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The spelling of 22561523712 in words is "twenty-two billion, five hundred sixty-one million, five hundred twenty-three thousand, seven hundred twelve".