517994302873 has 2 divisors, whose sum is σ = 517994302874. Its totient is φ = 517994302872.

The previous prime is 517994302849. The next prime is 517994302879. The reversal of 517994302873 is 378203499715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506037317769 + 11956985104 = 711363^2 + 109348^2 .

It is a cyclic number.

It is not a de Polignac number, because 517994302873 - 2¹⁷ = 517994171801 is a prime.

It is not a weakly prime, because it can be changed into another prime (517994302879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258997151436 + 258997151437.

It is an arithmetic number, because the mean of its divisors is an integer number (258997151437).

Almost surely, 2^517994302873 is an apocalyptic number.

It is an amenable number.

517994302873 is a deficient number, since it is larger than the sum of its proper divisors (1).

517994302873 is an equidigital number, since it uses as much as digits as its factorization.

517994302873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 517994302873 in words is "five hundred seventeen billion, nine hundred ninety-four million, three hundred two thousand, eight hundred seventy-three".