16608909845 has 24 divisors (see below), whose sum is σ = 22729043232. Its totient is φ = 11554004000.

The previous prime is 16608909829. The next prime is 16608909847. The reversal of 16608909845 is 54890980661.

It is a happy number.

It is not a de Polignac number, because 16608909845 - 2⁴ = 16608909829 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 (16608909847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256331 + ... + 314520.

It is an arithmetic number, because the mean of its divisors is an integer number (947043468).

Almost surely, 2^16608909845 is an apocalyptic number.

It is an amenable number.

16608909845 is a deficient number, since it is larger than the sum of its proper divisors (6120133387).

16608909845 is a wasteful number, since it uses less digits than its factorization.

16608909845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570913 (or 570890 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 16608909845 in words is "sixteen billion, six hundred eight million, nine hundred nine thousand, eight hundred forty-five".