13044012403 has 4 divisors (see below), whose sum is σ = 13044247048. Its totient is φ = 13043777760.

The previous prime is 13044012389. The next prime is 13044012407. The reversal of 13044012403 is 30421044031.

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 13044012403 - 2⁹ = 13044011891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13044012407) 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, 18400 + ... + 162562.

It is an arithmetic number, because the mean of its divisors is an integer number (3261061762).

Almost surely, 2^13044012403 is an apocalyptic number.

13044012403 is a deficient number, since it is larger than the sum of its proper divisors (234645).

13044012403 is an equidigital number, since it uses as much as digits as its factorization.

13044012403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234644.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13044012403 its reverse (30421044031), we get a palindrome (43465056434).

The spelling of 13044012403 in words is "thirteen billion, forty-four million, twelve thousand, four hundred three".