22045636909 has 2 divisors, whose sum is σ = 22045636910. Its totient is φ = 22045636908.

The previous prime is 22045636897. The next prime is 22045636979. The reversal of 22045636909 is 90963654022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18161605225 + 3884031684 = 134765^2 + 62322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22045636909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22045636979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11022818454 + 11022818455.

It is an arithmetic number, because the mean of its divisors is an integer number (11022818455).

Almost surely, 2^22045636909 is an apocalyptic number.

It is an amenable number.

22045636909 is a deficient number, since it is larger than the sum of its proper divisors (1).

22045636909 is an equidigital number, since it uses as much as digits as its factorization.

22045636909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 22045636909 in words is "twenty-two billion, forty-five million, six hundred thirty-six thousand, nine hundred nine".