13047685517 has 2 divisors, whose sum is σ = 13047685518. Its totient is φ = 13047685516.

The previous prime is 13047685507. The next prime is 13047685579. The reversal of 13047685517 is 71558674031.

13047685517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10406856196 + 2640829321 = 102014^2 + 51389^2 .

It is a cyclic number.

It is not a de Polignac number, because 13047685517 - 2⁴ = 13047685501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13047685507) 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, 6523842758 + 6523842759.

It is an arithmetic number, because the mean of its divisors is an integer number (6523842759).

Almost surely, 2^13047685517 is an apocalyptic number.

It is an amenable number.

13047685517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13047685517 is an equidigital number, since it uses as much as digits as its factorization.

13047685517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 13047685517 in words is "thirteen billion, forty-seven million, six hundred eighty-five thousand, five hundred seventeen".