12613644221236 has 24 divisors (see below), whose sum is σ = 23251920692000. Its totient is φ = 5970702888864.

The previous prime is 12613644221231. The next prime is 12613644221251. The reversal of 12613644221236 is 63212244631621.

It is a junction number, because it is equal to n+sod(n) for n = 12613644221192 and 12613644221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613644221231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57963126 + ... + 58180333.

Almost surely, 2^{12613644221236} is an apocalyptic number.

It is an amenable number.

12613644221236 is a deficient number, since it is larger than the sum of its proper divisors (10638276470764).

12613644221236 is a wasteful number, since it uses less digits than its factorization.

12613644221236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116144911 (or 116144909 counting only the distinct ones).

The product of its digits is 497664, while the sum is 43.

Adding to 12613644221236 its reverse (63212244631621), we get a palindrome (75825888852857).

The spelling of 12613644221236 in words is "twelve trillion, six hundred thirteen billion, six hundred forty-four million, two hundred twenty-one thousand, two hundred thirty-six".