517235564413 has 2 divisors, whose sum is σ = 517235564414. Its totient is φ = 517235564412.

The previous prime is 517235564401. The next prime is 517235564441. The reversal of 517235564413 is 314465532715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405644157604 + 111591406809 = 636902^2 + 334053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517235564413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517235564453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258617782206 + 258617782207.

It is an arithmetic number, because the mean of its divisors is an integer number (258617782207).

Almost surely, 2^517235564413 is an apocalyptic number.

It is an amenable number.

517235564413 is a deficient number, since it is larger than the sum of its proper divisors (1).

517235564413 is an equidigital number, since it uses as much as digits as its factorization.

517235564413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 46.

The spelling of 517235564413 in words is "five hundred seventeen billion, two hundred thirty-five million, five hundred sixty-four thousand, four hundred thirteen".