22811638249 has 2 divisors, whose sum is σ = 22811638250. Its totient is φ = 22811638248.

The previous prime is 22811638219. The next prime is 22811638253. The reversal of 22811638249 is 94283611822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22052250000 + 759388249 = 148500^2 + 27557^2 .

It is a cyclic number.

It is not a de Polignac number, because 22811638249 - 2⁷ = 22811638121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22811638199 and 22811638208.

It is not a weakly prime, because it can be changed into another prime (22811638219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11405819124 + 11405819125.

It is an arithmetic number, because the mean of its divisors is an integer number (11405819125).

Almost surely, 2^22811638249 is an apocalyptic number.

It is an amenable number.

22811638249 is a deficient number, since it is larger than the sum of its proper divisors (1).

22811638249 is an equidigital number, since it uses as much as digits as its factorization.

22811638249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 46.

The spelling of 22811638249 in words is "twenty-two billion, eight hundred eleven million, six hundred thirty-eight thousand, two hundred forty-nine".