517009907371768 has 16 divisors (see below), whose sum is σ = 990018971563680. Its totient is φ = 253004848288128.

The previous prime is 517009907371649. The next prime is 517009907371981. The reversal of 517009907371768 is 867173709900715.

It is a junction number, because it is equal to n+sod(n) for n = 517009907371697 and 517009907371706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687513174321 + ... + 687513175072.

It is an arithmetic number, because the mean of its divisors is an integer number (61876185722730).

Almost surely, 2^{517009907371768} is an apocalyptic number.

It is an amenable number.

517009907371768 is a deficient number, since it is larger than the sum of its proper divisors (473009064191912).

517009907371768 is a wasteful number, since it uses less digits than its factorization.

517009907371768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375026349446 (or 1375026349442 counting only the distinct ones).

The product of its (nonzero) digits is 140026320, while the sum is 70.

The spelling of 517009907371768 in words is "five hundred seventeen trillion, nine billion, nine hundred seven million, three hundred seventy-one thousand, seven hundred sixty-eight".