22166508580 has 12 divisors (see below), whose sum is σ = 46549668060. Its totient is φ = 8866603424.

The previous prime is 22166508571. The next prime is 22166508587. The reversal of 22166508580 is 8580566122.

It can be written as a sum of positive squares in 2 ways, for example, as 16608507876 + 5558000704 = 128874^2 + 74552^2 .

It is not an unprimeable number, because it can be changed into a prime (22166508587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554162695 + ... + 554162734.

It is an arithmetic number, because the mean of its divisors is an integer number (3879139005).

Almost surely, 2^22166508580 is an apocalyptic number.

22166508580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22166508580 is an abundant number, since it is smaller than the sum of its proper divisors (24383159480).

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

22166508580 is a wasteful number, since it uses less digits than its factorization.

22166508580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108325438 (or 1108325436 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 22166508580 in words is "twenty-two billion, one hundred sixty-six million, five hundred eight thousand, five hundred eighty".