13680609528 has 16 divisors (see below), whose sum is σ = 34201523880. Its totient is φ = 4560203168.

The previous prime is 13680609521. The next prime is 13680609541. The reversal of 13680609528 is 82590608631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13680609521) 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 3 ways as a sum of consecutive naturals, for example, 285012675 + ... + 285012722.

Almost surely, 2^13680609528 is an apocalyptic number.

It is an amenable number.

13680609528 is an abundant number, since it is smaller than the sum of its proper divisors (20520914352).

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

13680609528 is a wasteful number, since it uses less digits than its factorization.

13680609528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570025406 (or 570025402 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 13680609528 in words is "thirteen billion, six hundred eighty million, six hundred nine thousand, five hundred twenty-eight".