13680509544529 has 4 divisors (see below), whose sum is σ = 13680516947776. Its totient is φ = 13680502141284.

The previous prime is 13680509544523. The next prime is 13680509544553. The reversal of 13680509544529 is 92544590508631.

It is a happy number.

13680509544529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13680509544529 - 2⁵ = 13680509544497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13680509544523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630852 + ... + 5479114.

It is an arithmetic number, because the mean of its divisors is an integer number (3420129236944).

Almost surely, 2^{13680509544529} is an apocalyptic number.

It is an amenable number.

13680509544529 is a deficient number, since it is larger than the sum of its proper divisors (7403247).

13680509544529 is an equidigital number, since it uses as much as digits as its factorization.

13680509544529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403246.

The product of its (nonzero) digits is 46656000, while the sum is 61.

The spelling of 13680509544529 in words is "thirteen trillion, six hundred eighty billion, five hundred nine million, five hundred forty-four thousand, five hundred twenty-nine".