13506402003 has 4 divisors (see below), whose sum is σ = 18008536008. Its totient is φ = 9004268000.

The previous prime is 13506401947. The next prime is 13506402089. The reversal of 13506402003 is 30020460531.

It is a happy number.

13506402003 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 13506402003 - 2¹² = 13506397907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13506404003) 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, 2251066998 + ... + 2251067003.

It is an arithmetic number, because the mean of its divisors is an integer number (4502134002).

Almost surely, 2^13506402003 is an apocalyptic number.

13506402003 is a deficient number, since it is larger than the sum of its proper divisors (4502134005).

13506402003 is an equidigital number, since it uses as much as digits as its factorization.

13506402003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4502134004.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 13506402003 its reverse (30020460531), we get a palindrome (43526862534).

The spelling of 13506402003 in words is "thirteen billion, five hundred six million, four hundred two thousand, three".