12455242323509 has 2 divisors, whose sum is σ = 12455242323510. Its totient is φ = 12455242323508.

The previous prime is 12455242323451. The next prime is 12455242323523. The reversal of 12455242323509 is 90532324255421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9673051683409 + 2782190640100 = 3110153^2 + 1667990^2 .

It is a cyclic number.

It is not a de Polignac number, because 12455242323509 - 2⁸ = 12455242323253 is a prime.

It is a super-2 number, since 2×12455242323509² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12455242323539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6227621161754 + 6227621161755.

It is an arithmetic number, because the mean of its divisors is an integer number (6227621161755).

Almost surely, 2^{12455242323509} is an apocalyptic number.

It is an amenable number.

12455242323509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12455242323509 is an equidigital number, since it uses as much as digits as its factorization.

12455242323509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 12455242323509 in words is "twelve trillion, four hundred fifty-five billion, two hundred forty-two million, three hundred twenty-three thousand, five hundred nine".