13530253447 has 4 divisors (see below), whose sum is σ = 14118525360. Its totient is φ = 12941981536.

The previous prime is 13530253441. The next prime is 13530253487. The reversal of 13530253447 is 74435203531.

13530253447 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.

It is a cyclic number.

It is not a de Polignac number, because 13530253447 - 2¹⁵ = 13530220679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530253441) 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, 294135922 + ... + 294135967.

It is an arithmetic number, because the mean of its divisors is an integer number (3529631340).

Almost surely, 2^13530253447 is an apocalyptic number.

13530253447 is a deficient number, since it is larger than the sum of its proper divisors (588271913).

13530253447 is an equidigital number, since it uses as much as digits as its factorization.

13530253447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588271912.

The product of its (nonzero) digits is 151200, while the sum is 37.

Adding to 13530253447 its reverse (74435203531), we get a palindrome (87965456978).

The spelling of 13530253447 in words is "thirteen billion, five hundred thirty million, two hundred fifty-three thousand, four hundred forty-seven".