22686868909 has 2 divisors, whose sum is σ = 22686868910. Its totient is φ = 22686868908.

The previous prime is 22686868819. The next prime is 22686868921. The reversal of 22686868909 is 90986868622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18239312809 + 4447556100 = 135053^2 + 66690^2 .

It is a cyclic number.

It is not a de Polignac number, because 22686868909 - 2²⁵ = 22653314477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22686868969) by changing a digit.

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 as a sum of consecutive naturals, namely, 11343434454 + 11343434455.

It is an arithmetic number, because the mean of its divisors is an integer number (11343434455).

Almost surely, 2^22686868909 is an apocalyptic number.

It is an amenable number.

22686868909 is a deficient number, since it is larger than the sum of its proper divisors (1).

22686868909 is an equidigital number, since it uses as much as digits as its factorization.

22686868909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35831808, while the sum is 64.

The spelling of 22686868909 in words is "twenty-two billion, six hundred eighty-six million, eight hundred sixty-eight thousand, nine hundred nine".