517052855640 has 32 divisors (see below), whose sum is σ = 1551158567280. Its totient is φ = 137880761472.

The previous prime is 517052855639. The next prime is 517052855651. The reversal of 517052855640 is 46558250715.

It is a self number, because there is not a number n which added to its sum of digits gives 517052855640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154386779 + ... + 2154387018.

Almost surely, 2^517052855640 is an apocalyptic number.

It is an amenable number.

517052855640 is an abundant number, since it is smaller than the sum of its proper divisors (1034105711640).

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

517052855640 is a wasteful number, since it uses less digits than its factorization.

517052855640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308773811 (or 4308773807 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 48.

The spelling of 517052855640 in words is "five hundred seventeen billion, fifty-two million, eight hundred fifty-five thousand, six hundred forty".