16669643291 has 8 divisors (see below), whose sum is σ = 19235983104. Its totient is φ = 14149544040.

The previous prime is 16669643279. The next prime is 16669643303. The reversal of 16669643291 is 19234696661.

16669643291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16669643279) and next prime (16669643303).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16669643291 - 2¹⁴ = 16669626907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16669643261) by changing a digit.

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, 11559365 + ... + 11560806.

It is an arithmetic number, because the mean of its divisors is an integer number (2404497888).

Almost surely, 2^16669643291 is an apocalyptic number.

16669643291 is a deficient number, since it is larger than the sum of its proper divisors (2566339813).

16669643291 is a wasteful number, since it uses less digits than its factorization.

16669643291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23120281.

The product of its digits is 2519424, while the sum is 53.

The spelling of 16669643291 in words is "sixteen billion, six hundred sixty-nine million, six hundred forty-three thousand, two hundred ninety-one".