12432113503 has 4 divisors (see below), whose sum is σ = 12453293160. Its totient is φ = 12410933848.

The previous prime is 12432113423. The next prime is 12432113509. The reversal of 12432113503 is 30531123421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12432113503 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 (12432113509) 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, 10588948 + ... + 10590121.

It is an arithmetic number, because the mean of its divisors is an integer number (3113323290).

Almost surely, 2^12432113503 is an apocalyptic number.

12432113503 is a deficient number, since it is larger than the sum of its proper divisors (21179657).

12432113503 is an equidigital number, since it uses as much as digits as its factorization.

12432113503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21179656.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 12432113503 its reverse (30531123421), we get a palindrome (42963236924).

The spelling of 12432113503 in words is "twelve billion, four hundred thirty-two million, one hundred thirteen thousand, five hundred three".