16855603416 has 128 divisors (see below), whose sum is σ = 48866328000. Its totient is φ = 5376559104.

The previous prime is 16855603393. The next prime is 16855603417. The reversal of 16855603416 is 61430655861.

16855603416 is a `hidden beast` number, since 1 + 6 + 85 + 560 + 3 + 4 + 1 + 6 = 666.

16855603416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16855603416² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16855603417) 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 31 ways as a sum of consecutive naturals, for example, 695926 + ... + 719738.

Almost surely, 2^16855603416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16855603416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24433164000).

16855603416 is an abundant number, since it is smaller than the sum of its proper divisors (32010724584).

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

16855603416 is a wasteful number, since it uses less digits than its factorization.

16855603416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970 (or 23960 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 16855603416 in words is "sixteen billion, eight hundred fifty-five million, six hundred three thousand, four hundred sixteen".