16660443722224 has 20 divisors (see below), whose sum is σ = 32279836005144. Its totient is φ = 8330163462848.

The previous prime is 16660443722201. The next prime is 16660443722233. The reversal of 16660443722224 is 42222734406661.

It is a super-3 number, since 3×16660443722224³ (a number of 41 digits) contains 333 as substring.

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, 1248367 + ... + 5905870.

Almost surely, 2^{16660443722224} is an apocalyptic number.

It is an amenable number.

16660443722224 is a deficient number, since it is larger than the sum of its proper divisors (15619392282920).

16660443722224 is a wasteful number, since it uses less digits than its factorization.

16660443722224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7299792 (or 7299786 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 49.

It can be divided in two parts, 166604437 and 22224, that added together give a palindrome (166626661).

The spelling of 16660443722224 in words is "sixteen trillion, six hundred sixty billion, four hundred forty-three million, seven hundred twenty-two thousand, two hundred twenty-four".