12636336242251 has 6 divisors (see below), whose sum is σ = 13423374486020. Its totient is φ = 11893022345376.

The previous prime is 12636336242213. The next prime is 12636336242267. The reversal of 12636336242251 is 15224263363621.

It is not a de Polignac number, because 12636336242251 - 2²⁹ = 12635799371339 is a prime.

It is a super-2 number, since 2×12636336242251² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12636336242951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21862173141 + ... + 21862173718.

Almost surely, 2^{12636336242251} is an apocalyptic number.

12636336242251 is a deficient number, since it is larger than the sum of its proper divisors (787038243769).

12636336242251 is an equidigital number, since it uses as much as digits as its factorization.

12636336242251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43724346893 (or 43724346876 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 46.

The spelling of 12636336242251 in words is "twelve trillion, six hundred thirty-six billion, three hundred thirty-six million, two hundred forty-two thousand, two hundred fifty-one".