12636008069 has 2 divisors, whose sum is σ = 12636008070. Its totient is φ = 12636008068.

The previous prime is 12636008059. The next prime is 12636008107. The reversal of 12636008069 is 96080063621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12111002500 + 525005569 = 110050^2 + 22913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12636008069 is a prime.

It is a super-2 number, since 2×12636008069² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12636008009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318004034 + 6318004035.

It is an arithmetic number, because the mean of its divisors is an integer number (6318004035).

Almost surely, 2^12636008069 is an apocalyptic number.

It is an amenable number.

12636008069 is a deficient number, since it is larger than the sum of its proper divisors (1).

12636008069 is an equidigital number, since it uses as much as digits as its factorization.

12636008069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 12636008069 in words is "twelve billion, six hundred thirty-six million, eight thousand, sixty-nine".