22566868992 has 144 divisors (see below), whose sum is σ = 66249041040. Its totient is φ = 7398604800.

The previous prime is 22566868979. The next prime is 22566869021. The reversal of 22566868992 is 29986866522.

22566868992 is a `hidden beast` number, since 2 + 2 + 566 + 8 + 68 + 9 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×22566868992² (a number of 22 digits) contains 22 as substring.

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, 1114317 + ... + 1134387.

It is an arithmetic number, because the mean of its divisors is an integer number (460062785).

Almost surely, 2^22566868992 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 22566868992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33124520520).

22566868992 is an abundant number, since it is smaller than the sum of its proper divisors (43682172048).

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

22566868992 is a wasteful number, since it uses less digits than its factorization.

22566868992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20160 (or 20137 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 22566868992 in words is "twenty-two billion, five hundred sixty-six million, eight hundred sixty-eight thousand, nine hundred ninety-two".