16855000204 has 72 divisors (see below), whose sum is σ = 35463120000. Its totient is φ = 6981811200.

The previous prime is 16855000157. The next prime is 16855000213. The reversal of 16855000204 is 40200055861.

16855000204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 23 ways as a sum of consecutive naturals, for example, 7587814 + ... + 7590034.

Almost surely, 2^16855000204 is an apocalyptic number.

16855000204 is a gapful number since it is divisible by the number (14) 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 16855000204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17731560000).

16855000204 is an abundant number, since it is smaller than the sum of its proper divisors (18608119796).

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

16855000204 is a wasteful number, since it uses less digits than its factorization.

16855000204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519 (or 3510 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 16855000204 in words is "sixteen billion, eight hundred fifty-five million, two hundred four", and thus it is an aban number.