16545663188 has 12 divisors (see below), whose sum is σ = 28956912852. Its totient is φ = 8272259520.

The previous prime is 16545663187. The next prime is 16545663193. The reversal of 16545663188 is 88136654561.

It is a happy number.

16545663188 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 10029621904 + 6516041284 = 100148^2 + 80722^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545663187) 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, 74273 + ... + 196488.

It is an arithmetic number, because the mean of its divisors is an integer number (2413076071).

Almost surely, 2^16545663188 is an apocalyptic number.

It is an amenable number.

16545663188 is a deficient number, since it is larger than the sum of its proper divisors (12411249664).

16545663188 is a wasteful number, since it uses less digits than its factorization.

16545663188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286042 (or 286040 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 53.

The spelling of 16545663188 in words is "sixteen billion, five hundred forty-five million, six hundred sixty-three thousand, one hundred eighty-eight".