16669643318 has 16 divisors (see below), whose sum is σ = 26683789824. Its totient is φ = 7782768000.

The previous prime is 16669643303. The next prime is 16669643351. The reversal of 16669643318 is 81334696661.

16669643318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16669643318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1925933 + ... + 1934568.

It is an arithmetic number, because the mean of its divisors is an integer number (1667736864).

Almost surely, 2^16669643318 is an apocalyptic number.

16669643318 is a deficient number, since it is larger than the sum of its proper divisors (10014146506).

16669643318 is a wasteful number, since it uses less digits than its factorization.

16669643318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860647.

The product of its digits is 3359232, while the sum is 53.

The spelling of 16669643318 in words is "sixteen billion, six hundred sixty-nine million, six hundred forty-three thousand, three hundred eighteen".