23401622509 has 2 divisors, whose sum is σ = 23401622510. Its totient is φ = 23401622508.

The previous prime is 23401622477. The next prime is 23401622537. The reversal of 23401622509 is 90522610432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17818245225 + 5583377284 = 133485^2 + 74722^2 .

It is a cyclic number.

It is not a de Polignac number, because 23401622509 - 2⁵ = 23401622477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23401622539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11700811254 + 11700811255.

It is an arithmetic number, because the mean of its divisors is an integer number (11700811255).

Almost surely, 2^23401622509 is an apocalyptic number.

It is an amenable number.

23401622509 is a deficient number, since it is larger than the sum of its proper divisors (1).

23401622509 is an equidigital number, since it uses as much as digits as its factorization.

23401622509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 23401622509 in words is "twenty-three billion, four hundred one million, six hundred twenty-two thousand, five hundred nine".