517990869936 has 60 divisors (see below), whose sum is σ = 1453693185360. Its totient is φ = 172182648960.

The previous prime is 517990869901. The next prime is 517990869947. The reversal of 517990869936 is 639968099715.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4958275 + ... + 5061666.

It is an arithmetic number, because the mean of its divisors is an integer number (24228219756).

Almost surely, 2^517990869936 is an apocalyptic number.

It is an amenable number.

517990869936 is an abundant number, since it is smaller than the sum of its proper divisors (935702315424).

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

517990869936 is a wasteful number, since it uses less digits than its factorization.

517990869936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020314 (or 10020305 counting only the distinct ones).

The product of its (nonzero) digits is 198404640, while the sum is 72.

The spelling of 517990869936 in words is "five hundred seventeen billion, nine hundred ninety million, eight hundred sixty-nine thousand, nine hundred thirty-six".