23444654509 has 2 divisors, whose sum is σ = 23444654510. Its totient is φ = 23444654508.

The previous prime is 23444654501. The next prime is 23444654557. The reversal of 23444654509 is 90545644432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14982494409 + 8462160100 = 122403^2 + 91990^2 .

It is a cyclic number.

It is not a de Polignac number, because 23444654509 - 2³ = 23444654501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23444654501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11722327254 + 11722327255.

It is an arithmetic number, because the mean of its divisors is an integer number (11722327255).

Almost surely, 2^23444654509 is an apocalyptic number.

It is an amenable number.

23444654509 is a deficient number, since it is larger than the sum of its proper divisors (1).

23444654509 is an equidigital number, since it uses as much as digits as its factorization.

23444654509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 23444654509 in words is "twenty-three billion, four hundred forty-four million, six hundred fifty-four thousand, five hundred nine".