16669105989 has 8 divisors (see below), whose sum is σ = 22226602272. Its totient is φ = 11112173520.

The previous prime is 16669105987. The next prime is 16669106099. The reversal of 16669105989 is 98950196661.

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

It is not a de Polignac number, because 16669105989 - 2¹ = 16669105987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16669105987) 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, 66322 + ... + 194259.

It is an arithmetic number, because the mean of its divisors is an integer number (2778325284).

Almost surely, 2^16669105989 is an apocalyptic number.

It is an amenable number.

16669105989 is a deficient number, since it is larger than the sum of its proper divisors (5557496283).

16669105989 is a wasteful number, since it uses less digits than its factorization.

16669105989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281907.

The product of its (nonzero) digits is 6298560, while the sum is 60.

The spelling of 16669105989 in words is "sixteen billion, six hundred sixty-nine million, one hundred five thousand, nine hundred eighty-nine".