12641316443513 has 2 divisors, whose sum is σ = 12641316443514. Its totient is φ = 12641316443512.

The previous prime is 12641316443461. The next prime is 12641316443551. The reversal of 12641316443513 is 31534461314621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7540367716729 + 5100948726784 = 2745973^2 + 2258528^2 .

It is a cyclic number.

It is not a de Polignac number, because 12641316443513 - 2¹⁸ = 12641316181369 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12641316443713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320658221756 + 6320658221757.

It is an arithmetic number, because the mean of its divisors is an integer number (6320658221757).

Almost surely, 2^{12641316443513} is an apocalyptic number.

It is an amenable number.

12641316443513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641316443513 is an equidigital number, since it uses as much as digits as its factorization.

12641316443513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 44.

The spelling of 12641316443513 in words is "twelve trillion, six hundred forty-one billion, three hundred sixteen million, four hundred forty-three thousand, five hundred thirteen".