12603638917 has 2 divisors, whose sum is σ = 12603638918. Its totient is φ = 12603638916.

The previous prime is 12603638903. The next prime is 12603638933. The reversal of 12603638917 is 71983630621.

12603638917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9716833476 + 2886805441 = 98574^2 + 53729^2 .

It is a cyclic number.

It is not a de Polignac number, because 12603638917 - 2¹¹ = 12603636869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12603635917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6301819458 + 6301819459.

It is an arithmetic number, because the mean of its divisors is an integer number (6301819459).

Almost surely, 2^12603638917 is an apocalyptic number.

It is an amenable number.

12603638917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12603638917 is an equidigital number, since it uses as much as digits as its factorization.

12603638917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 12603638917 in words is "twelve billion, six hundred three million, six hundred thirty-eight thousand, nine hundred seventeen".