12556072103 has 2 divisors, whose sum is σ = 12556072104. Its totient is φ = 12556072102.

The previous prime is 12556072093. The next prime is 12556072121. The reversal of 12556072103 is 30127065521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12556072103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12556072103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12556072703) 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, 6278036051 + 6278036052.

It is an arithmetic number, because the mean of its divisors is an integer number (6278036052).

Almost surely, 2^12556072103 is an apocalyptic number.

12556072103 is a deficient number, since it is larger than the sum of its proper divisors (1).

12556072103 is an equidigital number, since it uses as much as digits as its factorization.

12556072103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 12556072103 in words is "twelve billion, five hundred fifty-six million, seventy-two thousand, one hundred three".