12633440808 has 32 divisors (see below), whose sum is σ = 31719168000. Its totient is φ = 4193071488.

The previous prime is 12633440801. The next prime is 12633440857. The reversal of 12633440808 is 80804433621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12633440801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124008 + ... + 1135191.

It is an arithmetic number, because the mean of its divisors is an integer number (991224000).

Almost surely, 2^12633440808 is an apocalyptic number.

It is an amenable number.

12633440808 is an abundant number, since it is smaller than the sum of its proper divisors (19085727192).

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

12633440808 is a wasteful number, since it uses less digits than its factorization.

12633440808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259441 (or 2259437 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 12633440808 in words is "twelve billion, six hundred thirty-three million, four hundred forty thousand, eight hundred eight".