16851866688 has 168 divisors, whose sum is σ = 53056536000. Its totient is φ = 5090190336.

The previous prime is 16851866687. The next prime is 16851866741. The reversal of 16851866688 is 88666815861.

It is not an unprimeable number, because it can be changed into a prime (16851866683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218238 + ... + 285186.

Almost surely, 2^16851866688 is an apocalyptic number.

16851866688 is a gapful number since it is divisible by the number (18) 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 16851866688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26528268000).

16851866688 is an abundant number, since it is smaller than the sum of its proper divisors (36204669312).

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

16851866688 is a wasteful number, since it uses less digits than its factorization.

16851866688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67009 (or 66996 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 63.

The spelling of 16851866688 in words is "sixteen billion, eight hundred fifty-one million, eight hundred sixty-six thousand, six hundred eighty-eight".