518336835361 has 2 divisors, whose sum is σ = 518336835362. Its totient is φ = 518336835360.

The previous prime is 518336835329. The next prime is 518336835403. The reversal of 518336835361 is 163538633815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445263932961 + 73072902400 = 667281^2 + 270320^2 .

It is a cyclic number.

It is not a de Polignac number, because 518336835361 - 2⁵ = 518336835329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 518336835299 and 518336835308.

It is not a weakly prime, because it can be changed into another prime (518336836361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259168417680 + 259168417681.

It is an arithmetic number, because the mean of its divisors is an integer number (259168417681).

Almost surely, 2^518336835361 is an apocalyptic number.

It is an amenable number.

518336835361 is a deficient number, since it is larger than the sum of its proper divisors (1).

518336835361 is an equidigital number, since it uses as much as digits as its factorization.

518336835361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 52.

The spelling of 518336835361 in words is "five hundred eighteen billion, three hundred thirty-six million, eight hundred thirty-five thousand, three hundred sixty-one".