16684666860 has 192 divisors, whose sum is σ = 50109050880. Its totient is φ = 4138767360.

The previous prime is 16684666849. The next prime is 16684666883. The reversal of 16684666860 is 6866648661.

It is a self number, because there is not a number n which added to its sum of digits gives 16684666860.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15264474 + ... + 15265566.

It is an arithmetic number, because the mean of its divisors is an integer number (260984640).

Almost surely, 2^16684666860 is an apocalyptic number.

16684666860 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 16684666860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25054525440).

16684666860 is an abundant number, since it is smaller than the sum of its proper divisors (33424384020).

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

16684666860 is a wasteful number, since it uses less digits than its factorization.

16684666860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 57.

The spelling of 16684666860 in words is "sixteen billion, six hundred eighty-four million, six hundred sixty-six thousand, eight hundred sixty".