22566057720 has 256 divisors, whose sum is σ = 73820989440. Its totient is φ = 5496250368.

The previous prime is 22566057719. The next prime is 22566057733. The reversal of 22566057720 is 2775066522.

It is a super-2 number, since 2×22566057720² (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 63 ways as a sum of consecutive naturals, for example, 15174817 + ... + 15176303.

It is an arithmetic number, because the mean of its divisors is an integer number (288363240).

Almost surely, 2^22566057720 is an apocalyptic number.

22566057720 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 22566057720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36910494720).

22566057720 is an abundant number, since it is smaller than the sum of its proper divisors (51254931720).

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

22566057720 is a wasteful number, since it uses less digits than its factorization.

22566057720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734 (or 1730 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 22566057720 in words is "twenty-two billion, five hundred sixty-six million, fifty-seven thousand, seven hundred twenty".