16656985968 has 320 divisors, whose sum is σ = 56590663680. Its totient is φ = 4105728000.

The previous prime is 16656985921. The next prime is 16656985973. The reversal of 16656985968 is 86958965661.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 3361893 + ... + 3366843.

It is an arithmetic number, because the mean of its divisors is an integer number (176845824).

Almost surely, 2^16656985968 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 16656985968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28295331840).

16656985968 is an abundant number, since it is smaller than the sum of its proper divisors (39933677712).

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

16656985968 is a wasteful number, since it uses less digits than its factorization.

16656985968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036 (or 5030 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 69.

The spelling of 16656985968 in words is "sixteen billion, six hundred fifty-six million, nine hundred eighty-five thousand, nine hundred sixty-eight".