517923173860 has 12 divisors (see below), whose sum is σ = 1087638665148. Its totient is φ = 207169269536.

The previous prime is 517923173857. The next prime is 517923173947. The reversal of 517923173860 is 68371329715.

It can be written as a sum of positive squares in 2 ways, for example, as 206746633636 + 311176540224 = 454694^2 + 557832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 517923173798 and 517923173807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12948079327 + ... + 12948079366.

It is an arithmetic number, because the mean of its divisors is an integer number (90636555429).

Almost surely, 2^517923173860 is an apocalyptic number.

It is an amenable number.

517923173860 is an abundant number, since it is smaller than the sum of its proper divisors (569715491288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

517923173860 is a wasteful number, since it uses less digits than its factorization.

517923173860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25896158702 (or 25896158700 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 517923173860 in words is "five hundred seventeen billion, nine hundred twenty-three million, one hundred seventy-three thousand, eight hundred sixty".