518784676313 has 2 divisors, whose sum is σ = 518784676314. Its totient is φ = 518784676312.

The previous prime is 518784676231. The next prime is 518784676327. The reversal of 518784676313 is 313676487815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474849162649 + 43935513664 = 689093^2 + 209608^2 .

It is a cyclic number.

It is not a de Polignac number, because 518784676313 - 2¹⁶ = 518784610777 is a prime.

It is not a weakly prime, because it can be changed into another prime (518784676913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259392338156 + 259392338157.

It is an arithmetic number, because the mean of its divisors is an integer number (259392338157).

Almost surely, 2^518784676313 is an apocalyptic number.

It is an amenable number.

518784676313 is a deficient number, since it is larger than the sum of its proper divisors (1).

518784676313 is an equidigital number, since it uses as much as digits as its factorization.

518784676313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 59.

The spelling of 518784676313 in words is "five hundred eighteen billion, seven hundred eighty-four million, six hundred seventy-six thousand, three hundred thirteen".