16851687080 has 64 divisors (see below), whose sum is σ = 38710949760. Its totient is φ = 6599926528.

The previous prime is 16851687071. The next prime is 16851687103. The reversal of 16851687080 is 8078615861.

16851687080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1058459 + ... + 1074261.

It is an arithmetic number, because the mean of its divisors is an integer number (604858590).

Almost surely, 2^16851687080 is an apocalyptic number.

16851687080 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 16851687080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19355474880).

16851687080 is an abundant number, since it is smaller than the sum of its proper divisors (21859262680).

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

16851687080 is a wasteful number, since it uses less digits than its factorization.

16851687080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16370 (or 16366 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 16851687080 in words is "sixteen billion, eight hundred fifty-one million, six hundred eighty-seven thousand, eighty".