16685853220 has 12 divisors (see below), whose sum is σ = 35040291804. Its totient is φ = 6674341280.

The previous prime is 16685853211. The next prime is 16685853227. The reversal of 16685853220 is 2235858661.

16685853220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5758077924 + 10927775296 = 75882^2 + 104536^2 .

It is not an unprimeable number, because it can be changed into a prime (16685853227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 417146311 + ... + 417146350.

It is an arithmetic number, because the mean of its divisors is an integer number (2920024317).

Almost surely, 2^16685853220 is an apocalyptic number.

16685853220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16685853220 is an abundant number, since it is smaller than the sum of its proper divisors (18354438584).

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

16685853220 is a wasteful number, since it uses less digits than its factorization.

16685853220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834292670 (or 834292668 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 16685853220 in words is "sixteen billion, six hundred eighty-five million, eight hundred fifty-three thousand, two hundred twenty".