12503305043 has 4 divisors (see below), whose sum is σ = 12520940880. Its totient is φ = 12485669208.

The previous prime is 12503305013. The next prime is 12503305063. The reversal of 12503305043 is 34050330521.

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 12503305043 - 2¹⁴ = 12503288659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12503305013) 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, 8816855 + ... + 8818272.

It is an arithmetic number, because the mean of its divisors is an integer number (3130235220).

Almost surely, 2^12503305043 is an apocalyptic number.

12503305043 is a deficient number, since it is larger than the sum of its proper divisors (17635837).

12503305043 is an equidigital number, since it uses as much as digits as its factorization.

12503305043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17635836.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 12503305043 its reverse (34050330521), we get a palindrome (46553635564).

The spelling of 12503305043 in words is "twelve billion, five hundred three million, three hundred five thousand, forty-three".