13530442553 has 4 divisors (see below), whose sum is σ = 14118722688. Its totient is φ = 12942162420.

The previous prime is 13530442543. The next prime is 13530442561. The reversal of 13530442553 is 35524403531.

It is a happy number.

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 not a de Polignac number, because 13530442553 - 2⁴ = 13530442537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530442543) 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, 294140033 + ... + 294140078.

It is an arithmetic number, because the mean of its divisors is an integer number (3529680672).

Almost surely, 2^13530442553 is an apocalyptic number.

It is an amenable number.

13530442553 is a deficient number, since it is larger than the sum of its proper divisors (588280135).

13530442553 is an equidigital number, since it uses as much as digits as its factorization.

13530442553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588280134.

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 13530442553 in words is "thirteen billion, five hundred thirty million, four hundred forty-two thousand, five hundred fifty-three".