12442661251 has 2 divisors, whose sum is σ = 12442661252. Its totient is φ = 12442661250.

The previous prime is 12442661219. The next prime is 12442661269. The reversal of 12442661251 is 15216624421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12442661251 - 2⁵ = 12442661219 is a prime.

It is not a weakly prime, because it can be changed into another prime (12442661281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221330625 + 6221330626.

It is an arithmetic number, because the mean of its divisors is an integer number (6221330626).

Almost surely, 2^12442661251 is an apocalyptic number.

12442661251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442661251 is an equidigital number, since it uses as much as digits as its factorization.

12442661251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The spelling of 12442661251 in words is "twelve billion, four hundred forty-two million, six hundred sixty-one thousand, two hundred fifty-one".