16857804880 has 80 divisors (see below), whose sum is σ = 44847379584. Its totient is φ = 5772879360.

The previous prime is 16857804869. The next prime is 16857804919. The reversal of 16857804880 is 8840875861.

It is a happy number.

16857804880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 460035 + ... + 495325.

Almost surely, 2^16857804880 is an apocalyptic number.

16857804880 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 16857804880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22423689792).

16857804880 is an abundant number, since it is smaller than the sum of its proper divisors (27989574704).

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

16857804880 is a wasteful number, since it uses less digits than its factorization.

16857804880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36164 (or 36158 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 55.

The spelling of 16857804880 in words is "sixteen billion, eight hundred fifty-seven million, eight hundred four thousand, eight hundred eighty".