13660866928 has 40 divisors (see below), whose sum is σ = 27886929408. Its totient is φ = 6470008512.

The previous prime is 13660866917. The next prime is 13660866929. The reversal of 13660866928 is 82966806631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13660866929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142300 + ... + 218107.

Almost surely, 2^13660866928 is an apocalyptic number.

It is an amenable number.

13660866928 is an abundant number, since it is smaller than the sum of its proper divisors (14226062480).

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

13660866928 is a wasteful number, since it uses less digits than its factorization.

13660866928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360541 (or 360535 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 13660866928 in words is "thirteen billion, six hundred sixty million, eight hundred sixty-six thousand, nine hundred twenty-eight".