22649209889 has 2 divisors, whose sum is σ = 22649209890. Its totient is φ = 22649209888.

The previous prime is 22649209883. The next prime is 22649209907. The reversal of 22649209889 is 98890294622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16841550625 + 5807659264 = 129775^2 + 76208^2 .

It is a cyclic number.

It is not a de Polignac number, because 22649209889 - 2²⁸ = 22380774433 is a prime.

It is not a weakly prime, because it can be changed into another prime (22649209883) 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, 11324604944 + 11324604945.

It is an arithmetic number, because the mean of its divisors is an integer number (11324604945).

Almost surely, 2^22649209889 is an apocalyptic number.

It is an amenable number.

22649209889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22649209889 is an equidigital number, since it uses as much as digits as its factorization.

22649209889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 22649209889 in words is "twenty-two billion, six hundred forty-nine million, two hundred nine thousand, eight hundred eighty-nine".