12641316443551 has 2 divisors, whose sum is σ = 12641316443552. Its totient is φ = 12641316443550.

The previous prime is 12641316443513. The next prime is 12641316443603. The reversal of 12641316443551 is 15534461314621.

It is a weak prime.

It is an emirp because it is prime and its reverse (15534461314621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12641316443551 - 2²⁵ = 12641282889119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12641316443051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320658221775 + 6320658221776.

It is an arithmetic number, because the mean of its divisors is an integer number (6320658221776).

Almost surely, 2^{12641316443551} is an apocalyptic number.

12641316443551 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641316443551 is an equidigital number, since it uses as much as digits as its factorization.

12641316443551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 46.

The spelling of 12641316443551 in words is "twelve trillion, six hundred forty-one billion, three hundred sixteen million, four hundred forty-three thousand, five hundred fifty-one".