12403005503 has 8 divisors (see below), whose sum is σ = 15008679072. Its totient is φ = 10005785856.

The previous prime is 12403005491. The next prime is 12403005509. The reversal of 12403005503 is 30550030421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12403005503 - 2⁸ = 12403005247 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 (12403005509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52113350 + ... + 52113587.

It is an arithmetic number, because the mean of its divisors is an integer number (1876084884).

Almost surely, 2^12403005503 is an apocalyptic number.

12403005503 is a deficient number, since it is larger than the sum of its proper divisors (2605673569).

12403005503 is a wasteful number, since it uses less digits than its factorization.

12403005503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104226961.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 12403005503 its reverse (30550030421), we get a palindrome (42953035924).

The spelling of 12403005503 in words is "twelve billion, four hundred three million, five thousand, five hundred three".