12632135621 has 8 divisors (see below), whose sum is σ = 14743891200. Its totient is φ = 10597171248.

The previous prime is 12632135609. The next prime is 12632135623. The reversal of 12632135621 is 12653123621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12632135621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12632135623) 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, 19197446 + ... + 19198103.

It is an arithmetic number, because the mean of its divisors is an integer number (1842986400).

Almost surely, 2^12632135621 is an apocalyptic number.

It is an amenable number.

12632135621 is a deficient number, since it is larger than the sum of its proper divisors (2111755579).

12632135621 is an equidigital number, since it uses as much as digits as its factorization.

12632135621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38395603.

The product of its digits is 12960, while the sum is 32.

The spelling of 12632135621 in words is "twelve billion, six hundred thirty-two million, one hundred thirty-five thousand, six hundred twenty-one".