22156275565 has 16 divisors (see below), whose sum is σ = 27505696176. Its totient is φ = 17121472000.

The previous prime is 22156275527. The next prime is 22156275569. The reversal of 22156275565 is 56557265122.

It can be written as a sum of positive squares in 8 ways, for example, as 1097331876 + 21058943689 = 33126^2 + 145117^2 .

It is not a de Polignac number, because 22156275565 - 2⁷ = 22156275437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22156275569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514342 + ... + 555751.

It is an arithmetic number, because the mean of its divisors is an integer number (1719106011).

Almost surely, 2^22156275565 is an apocalyptic number.

It is an amenable number.

22156275565 is a deficient number, since it is larger than the sum of its proper divisors (5349420611).

22156275565 is a wasteful number, since it uses less digits than its factorization.

22156275565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070240.

The product of its digits is 1260000, while the sum is 46.

The spelling of 22156275565 in words is "twenty-two billion, one hundred fifty-six million, two hundred seventy-five thousand, five hundred sixty-five".