517186685485 has 8 divisors (see below), whose sum is σ = 657131318136. Its totient is φ = 389411151360.

The previous prime is 517186685461. The next prime is 517186685563. The reversal of 517186685485 is 584586681715.

It can be written as a sum of positive squares in 4 ways, for example, as 170316337636 + 346870347849 = 412694^2 + 588957^2 .

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

It is not a de Polignac number, because 517186685485 - 2¹¹ = 517186683437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3042274536 + ... + 3042274705.

It is an arithmetic number, because the mean of its divisors is an integer number (82141414767).

Almost surely, 2^517186685485 is an apocalyptic number.

It is an amenable number.

517186685485 is a deficient number, since it is larger than the sum of its proper divisors (139944632651).

517186685485 is a wasteful number, since it uses less digits than its factorization.

517186685485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084549263.

The product of its digits is 64512000, while the sum is 64.

The spelling of 517186685485 in words is "five hundred seventeen billion, one hundred eighty-six million, six hundred eighty-five thousand, four hundred eighty-five".