13021286342917 has 2 divisors, whose sum is σ = 13021286342918. Its totient is φ = 13021286342916.

The previous prime is 13021286342903. The next prime is 13021286343007. The reversal of 13021286342917 is 71924368212031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8241986424996 + 4779299917921 = 2870886^2 + 2186161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13021286342917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13021286342017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510643171458 + 6510643171459.

It is an arithmetic number, because the mean of its divisors is an integer number (6510643171459).

Almost surely, 2^{13021286342917} is an apocalyptic number.

It is an amenable number.

13021286342917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021286342917 is an equidigital number, since it uses as much as digits as its factorization.

13021286342917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 13021286342917 in words is "thirteen trillion, twenty-one billion, two hundred eighty-six million, three hundred forty-two thousand, nine hundred seventeen".