22446666917 has 2 divisors, whose sum is σ = 22446666918. Its totient is φ = 22446666916.

The previous prime is 22446666883. The next prime is 22446666923. The reversal of 22446666917 is 71966664422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20104687681 + 2341979236 = 141791^2 + 48394^2 .

It is a cyclic number.

It is not a de Polignac number, because 22446666917 - 2²⁴ = 22429889701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22446686917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11223333458 + 11223333459.

It is an arithmetic number, because the mean of its divisors is an integer number (11223333459).

Almost surely, 2^22446666917 is an apocalyptic number.

It is an amenable number.

22446666917 is a deficient number, since it is larger than the sum of its proper divisors (1).

22446666917 is an equidigital number, since it uses as much as digits as its factorization.

22446666917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 53.

The spelling of 22446666917 in words is "twenty-two billion, four hundred forty-six million, six hundred sixty-six thousand, nine hundred seventeen".