22684395809 has 2 divisors, whose sum is σ = 22684395810. Its totient is φ = 22684395808.

The previous prime is 22684395781. The next prime is 22684395871. The reversal of 22684395809 is 90859348622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14579355025 + 8105040784 = 120745^2 + 90028^2 .

It is a cyclic number.

It is not a de Polignac number, because 22684395809 - 2¹² = 22684391713 is a prime.

It is not a weakly prime, because it can be changed into another prime (22684395889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11342197904 + 11342197905.

It is an arithmetic number, because the mean of its divisors is an integer number (11342197905).

Almost surely, 2^22684395809 is an apocalyptic number.

It is an amenable number.

22684395809 is a deficient number, since it is larger than the sum of its proper divisors (1).

22684395809 is an equidigital number, since it uses as much as digits as its factorization.

22684395809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 22684395809 in words is "twenty-two billion, six hundred eighty-four million, three hundred ninety-five thousand, eight hundred nine".