12003611603 has 2 divisors, whose sum is σ = 12003611604. Its totient is φ = 12003611602.

The previous prime is 12003611591. The next prime is 12003611621. The reversal of 12003611603 is 30611630021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12003611603 is a prime.

It is not a weakly prime, because it can be changed into another prime (12003611203) 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 as a sum of consecutive naturals, namely, 6001805801 + 6001805802.

It is an arithmetic number, because the mean of its divisors is an integer number (6001805802).

Almost surely, 2^12003611603 is an apocalyptic number.

12003611603 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003611603 is an equidigital number, since it uses as much as digits as its factorization.

12003611603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 12003611603 in words is "twelve billion, three million, six hundred eleven thousand, six hundred three".