516540216144313 has 2 divisors, whose sum is σ = 516540216144314. Its totient is φ = 516540216144312.

The previous prime is 516540216144233. The next prime is 516540216144383. The reversal of 516540216144313 is 313441612045615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 449447292829584 + 67092923314729 = 21200172^2 + 8191027^2 .

It is a cyclic number.

It is not a de Polignac number, because 516540216144313 - 2³⁷ = 516402777190841 is a prime.

It is not a weakly prime, because it can be changed into another prime (516540216144383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258270108072156 + 258270108072157.

It is an arithmetic number, because the mean of its divisors is an integer number (258270108072157).

Almost surely, 2^{516540216144313} is an apocalyptic number.

It is an amenable number.

516540216144313 is a deficient number, since it is larger than the sum of its proper divisors (1).

516540216144313 is an equidigital number, since it uses as much as digits as its factorization.

516540216144313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 46.

Adding to 516540216144313 its reverse (313441612045615), we get a palindrome (829981828189928).

The spelling of 516540216144313 in words is "five hundred sixteen trillion, five hundred forty billion, two hundred sixteen million, one hundred forty-four thousand, three hundred thirteen".