17320665664 has 21 divisors (see below), whose sum is σ = 34372785331. Its totient is φ = 8659806400.

The previous prime is 17320665653. The next prime is 17320665721. The reversal of 17320665664 is 46656602371.

The square root of 17320665664 is 131608.

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

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

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, 1044639 + ... + 1061089.

Almost surely, 2^17320665664 is an apocalyptic number.

17320665664 is the 131608-th square number.

It is an amenable number.

17320665664 is a deficient number, since it is larger than the sum of its proper divisors (17052119667).

17320665664 is an frugal number, since it uses more digits than its factorization.

17320665664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32914 (or 16453 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 17320665664 in words is "seventeen billion, three hundred twenty million, six hundred sixty-five thousand, six hundred sixty-four".