23426616209 has 2 divisors, whose sum is σ = 23426616210. Its totient is φ = 23426616208.

The previous prime is 23426616151. The next prime is 23426616251. The reversal of 23426616209 is 90261662432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12610616209 + 10816000000 = 112297^2 + 104000^2 .

It is a cyclic number.

It is not a de Polignac number, because 23426616209 - 2²⁴ = 23409838993 is a prime.

It is not a weakly prime, because it can be changed into another prime (23426616289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11713308104 + 11713308105.

It is an arithmetic number, because the mean of its divisors is an integer number (11713308105).

Almost surely, 2^23426616209 is an apocalyptic number.

It is an amenable number.

23426616209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23426616209 is an equidigital number, since it uses as much as digits as its factorization.

23426616209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 23426616209 in words is "twenty-three billion, four hundred twenty-six million, six hundred sixteen thousand, two hundred nine".