16813552728 has 128 divisors (see below), whose sum is σ = 49817963520. Its totient is φ = 4628482560.

The previous prime is 16813552711. The next prime is 16813552741. The reversal of 16813552728 is 82725531861.

16813552728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 627118 + ... + 653378.

It is an arithmetic number, because the mean of its divisors is an integer number (389202840).

Almost surely, 2^16813552728 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 16813552728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24908981760).

16813552728 is an abundant number, since it is smaller than the sum of its proper divisors (33004410792).

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

16813552728 is a wasteful number, since it uses less digits than its factorization.

16813552728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26417 (or 26413 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The spelling of 16813552728 in words is "sixteen billion, eight hundred thirteen million, five hundred fifty-two thousand, seven hundred twenty-eight".