12387317363749 has 2 divisors, whose sum is σ = 12387317363750. Its totient is φ = 12387317363748.

The previous prime is 12387317363747. The next prime is 12387317363807. The reversal of 12387317363749 is 94736371378321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10328465446849 + 2058851916900 = 3213793^2 + 1434870^2 .

It is an emirp because it is prime and its reverse (94736371378321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12387317363749 - 2¹ = 12387317363747 is a prime.

Together with 12387317363747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12387317363747) 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, 6193658681874 + 6193658681875.

It is an arithmetic number, because the mean of its divisors is an integer number (6193658681875).

Almost surely, 2^{12387317363749} is an apocalyptic number.

It is an amenable number.

12387317363749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12387317363749 is an equidigital number, since it uses as much as digits as its factorization.

12387317363749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96018048, while the sum is 64.

The spelling of 12387317363749 in words is "twelve trillion, three hundred eighty-seven billion, three hundred seventeen million, three hundred sixty-three thousand, seven hundred forty-nine".