It is a tau number, because it is divible by the number of its divisors (1440).
It is a congruent number.
It is an unprimeable number.
Almost surely, 216680867840 is an apocalyptic number.
16680867840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 16680867840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39171852720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
16680867840 is a wasteful number, since it uses less digits than its factorization.
16680867840 is an evil number, because the sum of its binary digits is even.
The spelling of 16680867840 in words is "sixteen billion, six hundred eighty million, eight hundred sixty-seven thousand, eight hundred forty".