13256320361513 has 2 divisors, whose sum is σ = 13256320361514. Its totient is φ = 13256320361512.

The previous prime is 13256320361503. The next prime is 13256320361551. The reversal of 13256320361513 is 31516302365231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12034294026304 + 1222026335209 = 3469048^2 + 1105453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13256320361513 is a prime.

It is not a weakly prime, because it can be changed into another prime (13256320361503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628160180756 + 6628160180757.

It is an arithmetic number, because the mean of its divisors is an integer number (6628160180757).

Almost surely, 2^{13256320361513} is an apocalyptic number.

It is an amenable number.

13256320361513 is a deficient number, since it is larger than the sum of its proper divisors (1).

13256320361513 is an equidigital number, since it uses as much as digits as its factorization.

13256320361513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 13256320361513 in words is "thirteen trillion, two hundred fifty-six billion, three hundred twenty million, three hundred sixty-one thousand, five hundred thirteen".