12635486736 has 20 divisors (see below), whose sum is σ = 32641674192. Its totient is φ = 4211828896.

The previous prime is 12635486713. The next prime is 12635486777. The reversal of 12635486736 is 63768453621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131619606 + ... + 131619701.

Almost surely, 2^12635486736 is an apocalyptic number.

12635486736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12635486736 is an abundant number, since it is smaller than the sum of its proper divisors (20006187456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12635486736 is a wasteful number, since it uses less digits than its factorization.

12635486736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263239318 (or 263239312 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 51.

The spelling of 12635486736 in words is "twelve billion, six hundred thirty-five million, four hundred eighty-six thousand, seven hundred thirty-six".