517949983782 has 48 divisors (see below), whose sum is σ = 1399137622272. Its totient is φ = 134532462960.

The previous prime is 517949983769. The next prime is 517949983849. The reversal of 517949983782 is 287389949715.

517949983782 is a `hidden beast` number, since 51 + 7 + 9 + 499 + 8 + 3 + 7 + 82 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 517949983782.

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 23 ways as a sum of consecutive naturals, for example, 186849258 + ... + 186852029.

It is an arithmetic number, because the mean of its divisors is an integer number (29148700464).

Almost surely, 2^517949983782 is an apocalyptic number.

517949983782 is an abundant number, since it is smaller than the sum of its proper divisors (881187638490).

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

517949983782 is a wasteful number, since it uses less digits than its factorization.

517949983782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373701313 (or 373701310 counting only the distinct ones).

The product of its digits is 274337280, while the sum is 72.

The spelling of 517949983782 in words is "five hundred seventeen billion, nine hundred forty-nine million, nine hundred eighty-three thousand, seven hundred eighty-two".