12252343217509 has 2 divisors, whose sum is σ = 12252343217510. Its totient is φ = 12252343217508.

The previous prime is 12252343217453. The next prime is 12252343217531. The reversal of 12252343217509 is 90571234325221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10233537020100 + 2018806197409 = 3198990^2 + 1420847^2 .

It is a cyclic number.

It is not a de Polignac number, because 12252343217509 - 2⁷ = 12252343217381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12252343217539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6126171608754 + 6126171608755.

It is an arithmetic number, because the mean of its divisors is an integer number (6126171608755).

Almost surely, 2^{12252343217509} is an apocalyptic number.

It is an amenable number.

12252343217509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12252343217509 is an equidigital number, since it uses as much as digits as its factorization.

12252343217509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 12252343217509 in words is "twelve trillion, two hundred fifty-two billion, three hundred forty-three million, two hundred seventeen thousand, five hundred nine".