13812720728 has 16 divisors (see below), whose sum is σ = 27422313480. Its totient is φ = 6500103808.

The previous prime is 13812720703. The next prime is 13812720739. The reversal of 13812720728 is 82702721831.

13812720728 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 3 ways as a sum of consecutive naturals, for example, 50781926 + ... + 50782197.

Almost surely, 2^13812720728 is an apocalyptic number.

It is an amenable number.

13812720728 is a deficient number, since it is larger than the sum of its proper divisors (13609592752).

13812720728 is a wasteful number, since it uses less digits than its factorization.

13812720728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101564146 (or 101564142 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 13812720728 in words is "thirteen billion, eight hundred twelve million, seven hundred twenty thousand, seven hundred twenty-eight".