23426004209 has 2 divisors, whose sum is σ = 23426004210. Its totient is φ = 23426004208.

The previous prime is 23426004193. The next prime is 23426004211. The reversal of 23426004209 is 90240062432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18585323584 + 4840680625 = 136328^2 + 69575^2 .

It is a cyclic number.

It is not a de Polignac number, because 23426004209 - 2⁴ = 23426004193 is a prime.

It is a Sophie Germain prime.

Together with 23426004211, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23426004299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11713002104 + 11713002105.

It is an arithmetic number, because the mean of its divisors is an integer number (11713002105).

Almost surely, 2^23426004209 is an apocalyptic number.

It is an amenable number.

23426004209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23426004209 is an equidigital number, since it uses as much as digits as its factorization.

23426004209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 23426004209 in words is "twenty-three billion, four hundred twenty-six million, four thousand, two hundred nine".