22909985569 has 4 divisors (see below), whose sum is σ = 22947117444. Its totient is φ = 22872853696.

The previous prime is 22909985557. The next prime is 22909985591. The reversal of 22909985569 is 96558990922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96558990922 = 2 ⋅48279495461.

It can be written as a sum of positive squares in 2 ways, for example, as 12749345569 + 10160640000 = 112913^2 + 100800^2 .

It is a cyclic number.

It is not a de Polignac number, because 22909985569 - 2²¹ = 22907888417 is a prime.

It is a super-2 number, since 2×22909985569² (a number of 22 digits) contains 22 as substring.

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 22909985569.

It is not an unprimeable number, because it can be changed into a prime (22909985369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18565012 + ... + 18566245.

It is an arithmetic number, because the mean of its divisors is an integer number (5736779361).

Almost surely, 2^22909985569 is an apocalyptic number.

It is an amenable number.

22909985569 is a deficient number, since it is larger than the sum of its proper divisors (37131875).

22909985569 is an equidigital number, since it uses as much as digits as its factorization.

22909985569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37131874.

The product of its (nonzero) digits is 31492800, while the sum is 64.

The spelling of 22909985569 in words is "twenty-two billion, nine hundred nine million, nine hundred eighty-five thousand, five hundred sixty-nine".