16669642999 has 8 divisors (see below), whose sum is σ = 16781339520. Its totient is φ = 16558313016.

The previous prime is 16669642987. The next prime is 16669643083. The reversal of 16669642999 is 99924696661.

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 16669642999 - 2¹¹ = 16669640951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16669642919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69 + ... + 182590.

It is an arithmetic number, because the mean of its divisors is an integer number (2097667440).

Almost surely, 2^16669642999 is an apocalyptic number.

16669642999 is a deficient number, since it is larger than the sum of its proper divisors (111696521).

16669642999 is a wasteful number, since it uses less digits than its factorization.

16669642999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183269.

The product of its digits is 68024448, while the sum is 67.

The spelling of 16669642999 in words is "sixteen billion, six hundred sixty-nine million, six hundred forty-two thousand, nine hundred ninety-nine".