13020259281517 has 2 divisors, whose sum is σ = 13020259281518. Its totient is φ = 13020259281516.

The previous prime is 13020259281439. The next prime is 13020259281521. The reversal of 13020259281517 is 71518295202031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12932755133796 + 87504147721 = 3596214^2 + 295811^2 .

It is an emirp because it is prime and its reverse (71518295202031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13020259281517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13020259221517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510129640758 + 6510129640759.

It is an arithmetic number, because the mean of its divisors is an integer number (6510129640759).

Almost surely, 2^{13020259281517} is an apocalyptic number.

It is an amenable number.

13020259281517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020259281517 is an equidigital number, since it uses as much as digits as its factorization.

13020259281517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 13020259281517 in words is "thirteen trillion, twenty billion, two hundred fifty-nine million, two hundred eighty-one thousand, five hundred seventeen".