518961712864277 has 2 divisors, whose sum is σ = 518961712864278. Its totient is φ = 518961712864276.

The previous prime is 518961712864229. The next prime is 518961712864327. The reversal of 518961712864277 is 772468217169815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305661792710596 + 213299920153681 = 17483186^2 + 14604791^2 .

It is a cyclic number.

It is not a de Polignac number, because 518961712864277 - 2²⁴ = 518961696087061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518961712864207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259480856432138 + 259480856432139.

It is an arithmetic number, because the mean of its divisors is an integer number (259480856432139).

Almost surely, 2^{518961712864277} is an apocalyptic number.

It is an amenable number.

518961712864277 is a deficient number, since it is larger than the sum of its proper divisors (1).

518961712864277 is an equidigital number, since it uses as much as digits as its factorization.

518961712864277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 568995840, while the sum is 74.

The spelling of 518961712864277 in words is "five hundred eighteen trillion, nine hundred sixty-one billion, seven hundred twelve million, eight hundred sixty-four thousand, two hundred seventy-seven".