22566661065 has 48 divisors (see below), whose sum is σ = 42342907152. Its totient is φ = 11052122112.

The previous prime is 22566661003. The next prime is 22566661081. The reversal of 22566661065 is 56016666522.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 16232841 + 22550428224 = 4029^2 + 150168^2 .

It is not a de Polignac number, because 22566661065 - 2⁷ = 22566660937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 22566661065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12969 + ... + 212841.

It is an arithmetic number, because the mean of its divisors is an integer number (882143899).

Almost surely, 2^22566661065 is an apocalyptic number.

It is an amenable number.

22566661065 is a deficient number, since it is larger than the sum of its proper divisors (19776246087).

22566661065 is a wasteful number, since it uses less digits than its factorization.

22566661065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200090 (or 200087 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 22566661065 in words is "twenty-two billion, five hundred sixty-six million, six hundred sixty-one thousand, sixty-five".