22564211065 has 16 divisors (see below), whose sum is σ = 30822892416. Its totient is φ = 15696841600.

The previous prime is 22564211041. The next prime is 22564211071. The reversal of 22564211065 is 56011246522.

It is not a de Polignac number, because 22564211065 - 2²¹ = 22562113913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22564211065.

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 15 ways as a sum of consecutive naturals, for example, 8917396 + ... + 8919925.

It is an arithmetic number, because the mean of its divisors is an integer number (1926430776).

Almost surely, 2^22564211065 is an apocalyptic number.

It is an amenable number.

22564211065 is a deficient number, since it is larger than the sum of its proper divisors (8258681351).

22564211065 is a wasteful number, since it uses less digits than its factorization.

22564211065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17837360.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 22564211065 its reverse (56011246522), we get a palindrome (78575457587).

The spelling of 22564211065 in words is "twenty-two billion, five hundred sixty-four million, two hundred eleven thousand, sixty-five".