12663872069 has 2 divisors, whose sum is σ = 12663872070. Its totient is φ = 12663872068.

The previous prime is 12663872051. The next prime is 12663872113. The reversal of 12663872069 is 96027836621.

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., 11249359969 + 1414512100 = 106063^2 + 37610^2 .

It is a cyclic number.

It is not a de Polignac number, because 12663872069 - 2⁸ = 12663871813 is a prime.

It is a super-5 number, since 5×12663872069⁵ (a number of 52 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12663872369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6331936034 + 6331936035.

It is an arithmetic number, because the mean of its divisors is an integer number (6331936035).

Almost surely, 2^12663872069 is an apocalyptic number.

It is an amenable number.

12663872069 is a deficient number, since it is larger than the sum of its proper divisors (1).

12663872069 is an equidigital number, since it uses as much as digits as its factorization.

12663872069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 12663872069 in words is "twelve billion, six hundred sixty-three million, eight hundred seventy-two thousand, sixty-nine".