13526529409 has 4 divisors (see below), whose sum is σ = 13609514416. Its totient is φ = 13443544404.

The previous prime is 13526529403. The next prime is 13526529413. The reversal of 13526529409 is 90492562531.

13526529409 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13526529409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13526529403) by changing a digit.

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, 41492259 + ... + 41492584.

It is an arithmetic number, because the mean of its divisors is an integer number (3402378604).

Almost surely, 2^13526529409 is an apocalyptic number.

It is an amenable number.

13526529409 is a deficient number, since it is larger than the sum of its proper divisors (82985007).

13526529409 is an equidigital number, since it uses as much as digits as its factorization.

13526529409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82985006.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 13526529409 in words is "thirteen billion, five hundred twenty-six million, five hundred twenty-nine thousand, four hundred nine".