12507315641 has 2 divisors, whose sum is σ = 12507315642. Its totient is φ = 12507315640.

The previous prime is 12507315637. The next prime is 12507315679. The reversal of 12507315641 is 14651370521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12498345616 + 8970025 = 111796^2 + 2995^2 .

It is a cyclic number.

It is not a de Polignac number, because 12507315641 - 2² = 12507315637 is a prime.

It is not a weakly prime, because it can be changed into another prime (12507315631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253657820 + 6253657821.

It is an arithmetic number, because the mean of its divisors is an integer number (6253657821).

Almost surely, 2^12507315641 is an apocalyptic number.

It is an amenable number.

12507315641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12507315641 is an equidigital number, since it uses as much as digits as its factorization.

12507315641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The spelling of 12507315641 in words is "twelve billion, five hundred seven million, three hundred fifteen thousand, six hundred forty-one".