12663511243 has 2 divisors, whose sum is σ = 12663511244. Its totient is φ = 12663511242.

The previous prime is 12663511193. The next prime is 12663511283. The reversal of 12663511243 is 34211536621.

It is a strong prime.

It is an emirp because it is prime and its reverse (34211536621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12663511243 - 2⁹ = 12663510731 is a prime.

It is a super-3 number, since 3×12663511243³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12663511199 and 12663511208.

It is not a weakly prime, because it can be changed into another prime (12663511283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6331755621 + 6331755622.

It is an arithmetic number, because the mean of its divisors is an integer number (6331755622).

Almost surely, 2^12663511243 is an apocalyptic number.

12663511243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12663511243 is an equidigital number, since it uses as much as digits as its factorization.

12663511243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The spelling of 12663511243 in words is "twelve billion, six hundred sixty-three million, five hundred eleven thousand, two hundred forty-three".