517369472656 has 15 divisors (see below), whose sum is σ = 1002408927753. Its totient is φ = 258683297760.

The previous prime is 517369472629. The next prime is 517369472701. The reversal of 517369472656 is 656274963715.

It is a happy number.

The square root of 517369472656 is 719284.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4828026256 + 512541446400 = 69484^2 + 715920^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 517369472594 and 517369472603.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2787226 + ... + 2967046.

Almost surely, 2^517369472656 is an apocalyptic number.

517369472656 is the 719284-th square number.

It is an amenable number.

517369472656 is a deficient number, since it is larger than the sum of its proper divisors (485039455097).

517369472656 is an frugal number, since it uses more digits than its factorization.

517369472656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359650 (or 179823 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 61.

It can be divided in two parts, 517369 and 472656, that added together give a square (990025 = 995²).

The spelling of 517369472656 in words is "five hundred seventeen billion, three hundred sixty-nine million, four hundred seventy-two thousand, six hundred fifty-six".