22163120565 has 16 divisors (see below), whose sum is σ = 35464309056. Its totient is φ = 11819225600.

The previous prime is 22163120557. The next prime is 22163120641. The reversal of 22163120565 is 56502136122.

It is not a de Polignac number, because 22163120565 - 2³ = 22163120557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111970 + ... + 238460.

It is an arithmetic number, because the mean of its divisors is an integer number (2216519316).

Almost surely, 2^22163120565 is an apocalyptic number.

It is an amenable number.

22163120565 is a deficient number, since it is larger than the sum of its proper divisors (13301188491).

22163120565 is a wasteful number, since it uses less digits than its factorization.

22163120565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138180.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 22163120565 its reverse (56502136122), we get a palindrome (78665256687).

The spelling of 22163120565 in words is "twenty-two billion, one hundred sixty-three million, one hundred twenty thousand, five hundred sixty-five".