16660415200564 has 12 divisors (see below), whose sum is σ = 29160431457444. Its totient is φ = 8328863355584.

The previous prime is 16660415200501. The next prime is 16660415200577. The reversal of 16660415200564 is 46500251406661.

It can be written as a sum of positive squares in 2 ways, for example, as 7536946622500 + 9123468578064 = 2745350^2 + 3020508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336033289 + ... + 336082864.

It is an arithmetic number, because the mean of its divisors is an integer number (2430035954787).

Almost surely, 2^{16660415200564} is an apocalyptic number.

It is an amenable number.

16660415200564 is a deficient number, since it is larger than the sum of its proper divisors (12500016256880).

16660415200564 is a wasteful number, since it uses less digits than its factorization.

16660415200564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672122354 (or 672122352 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 16660415200564 in words is "sixteen trillion, six hundred sixty billion, four hundred fifteen million, two hundred thousand, five hundred sixty-four".