12656134336 has 56 divisors (see below), whose sum is σ = 25249418640. Its totient is φ = 6294193152.

The previous prime is 12656134297. The next prime is 12656134429. The reversal of 12656134336 is 63343165621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14430730 + ... + 14431606.

Almost surely, 2^12656134336 is an apocalyptic number.

12656134336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12656134336 is a deficient number, since it is larger than the sum of its proper divisors (12593284304).

12656134336 is an equidigital number, since it uses as much as digits as its factorization.

12656134336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1841 (or 1831 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

Adding to 12656134336 its reverse (63343165621), we get a palindrome (75999299957).

The spelling of 12656134336 in words is "twelve billion, six hundred fifty-six million, one hundred thirty-four thousand, three hundred thirty-six".