12449813808 has 20 divisors (see below), whose sum is σ = 32162019128. Its totient is φ = 4149937920.

The previous prime is 12449813801. The next prime is 12449813843. The reversal of 12449813808 is 80831894421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 259371121 = 12449813808 / (1 + 2 + 4 + 4 + 9 + 8 + 1 + 3 + 8 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (12449813801) by changing a digit.

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, 129685513 + ... + 129685608.

Almost surely, 2^12449813808 is an apocalyptic number.

It is an amenable number.

12449813808 is an abundant number, since it is smaller than the sum of its proper divisors (19712205320).

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

12449813808 is a wasteful number, since it uses less digits than its factorization.

12449813808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259371132 (or 259371126 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 12449813808 in words is "twelve billion, four hundred forty-nine million, eight hundred thirteen thousand, eight hundred eight".