13728808866 has 16 divisors (see below), whose sum is σ = 27459362304. Its totient is φ = 4575978864.

The previous prime is 13728808843. The next prime is 13728808867. The reversal of 13728808866 is 66880882731.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13728808867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44031 + ... + 171453.

It is an arithmetic number, because the mean of its divisors is an integer number (1716210144).

Almost surely, 2^13728808866 is an apocalyptic number.

13728808866 is an abundant number, since it is smaller than the sum of its proper divisors (13730553438).

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

13728808866 is a wasteful number, since it uses less digits than its factorization.

13728808866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145385.

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 13728808866 in words is "thirteen billion, seven hundred twenty-eight million, eight hundred eight thousand, eight hundred sixty-six".