16643816308 has 96 divisors (see below), whose sum is σ = 35939635200. Its totient is φ = 6586272000.

The previous prime is 16643816263. The next prime is 16643816309. The reversal of 16643816308 is 80361834661.

16643816308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16643816309) 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 31 ways as a sum of consecutive naturals, for example, 3359233 + ... + 3364183.

It is an arithmetic number, because the mean of its divisors is an integer number (374371200).

Almost surely, 2^16643816308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16643816308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17969817600).

16643816308 is an abundant number, since it is smaller than the sum of its proper divisors (19295818892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16643816308 is a wasteful number, since it uses less digits than its factorization.

16643816308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141 (or 5139 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 16643816308 in words is "sixteen billion, six hundred forty-three million, eight hundred sixteen thousand, three hundred eight".