13506057553 has 4 divisors (see below), whose sum is σ = 13557411648. Its totient is φ = 13454703460.

The previous prime is 13506057547. The next prime is 13506057563. The reversal of 13506057553 is 35575060531.

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 13506057553 - 2²⁹ = 12969186641 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13506057503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25676653 + ... + 25677178.

It is an arithmetic number, because the mean of its divisors is an integer number (3389352912).

Almost surely, 2^13506057553 is an apocalyptic number.

It is an amenable number.

13506057553 is a deficient number, since it is larger than the sum of its proper divisors (51354095).

13506057553 is an equidigital number, since it uses as much as digits as its factorization.

13506057553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51354094.

The product of its (nonzero) digits is 236250, while the sum is 40.

The spelling of 13506057553 in words is "thirteen billion, five hundred six million, fifty-seven thousand, five hundred fifty-three".