12556811303 has 4 divisors (see below), whose sum is σ = 13295447280. Its totient is φ = 11818175328.

The previous prime is 12556811279. The next prime is 12556811321. The reversal of 12556811303 is 30311865521.

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

It is a de Polignac number, because none of the positive numbers 2^k-12556811303 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 (12556811203) 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 3 ways as a sum of consecutive naturals, for example, 369317963 + ... + 369317996.

It is an arithmetic number, because the mean of its divisors is an integer number (3323861820).

Almost surely, 2^12556811303 is an apocalyptic number.

12556811303 is a deficient number, since it is larger than the sum of its proper divisors (738635977).

12556811303 is an equidigital number, since it uses as much as digits as its factorization.

12556811303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738635976.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 12556811303 in words is "twelve billion, five hundred fifty-six million, eight hundred eleven thousand, three hundred three".