517221668522 has 32 divisors (see below), whose sum is σ = 855786254400. Its totient is φ = 232983249408.

The previous prime is 517221668507. The next prime is 517221668533. The reversal of 517221668522 is 225866122715.

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 15 ways as a sum of consecutive naturals, for example, 999623 + ... + 1426074.

It is an arithmetic number, because the mean of its divisors is an integer number (26743320450).

Almost surely, 2^517221668522 is an apocalyptic number.

517221668522 is a deficient number, since it is larger than the sum of its proper divisors (338564585878).

517221668522 is a wasteful number, since it uses less digits than its factorization.

517221668522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425910.

The product of its digits is 806400, while the sum is 47.

The spelling of 517221668522 in words is "five hundred seventeen billion, two hundred twenty-one million, six hundred sixty-eight thousand, five hundred twenty-two".