517116510065 has 8 divisors (see below), whose sum is σ = 620551993320. Its totient is φ = 413685087232.

The previous prime is 517116510061. The next prime is 517116510067. The reversal of 517116510065 is 560015611715.

It can be written as a sum of positive squares in 4 ways, for example, as 113861029489 + 403255480576 = 337433^2 + 635024^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 517116510065 - 2² = 517116510061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (517116510061) 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 in 7 ways as a sum of consecutive naturals, for example, 727514 + ... + 1250403.

It is an arithmetic number, because the mean of its divisors is an integer number (77568999165).

Almost surely, 2^517116510065 is an apocalyptic number.

It is an amenable number.

517116510065 is a deficient number, since it is larger than the sum of its proper divisors (103435483255).

517116510065 is a wasteful number, since it uses less digits than its factorization.

517116510065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030211.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 517116510065 in words is "five hundred seventeen billion, one hundred sixteen million, five hundred ten thousand, sixty-five".