22666558620564 has 120 divisors (see below), whose sum is σ = 59803661998080. Its totient is φ = 7485706476864.

The previous prime is 22666558620551. The next prime is 22666558620683. The reversal of 22666558620564 is 46502685566622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29535742 + ... + 30293450.

It is an arithmetic number, because the mean of its divisors is an integer number (498363849984).

Almost surely, 2^{22666558620564} 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 22666558620564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29901830999040).

22666558620564 is an abundant number, since it is smaller than the sum of its proper divisors (37137103377516).

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

22666558620564 is a wasteful number, since it uses less digits than its factorization.

22666558620564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758579 (or 758568 counting only the distinct ones).

The product of its (nonzero) digits is 248832000, while the sum is 63.

The spelling of 22666558620564 in words is "twenty-two trillion, six hundred sixty-six billion, five hundred fifty-eight million, six hundred twenty thousand, five hundred sixty-four".