12181004448 has 48 divisors (see below), whose sum is σ = 31984283520. Its totient is φ = 4059173376.

The previous prime is 12181004419. The next prime is 12181004449. The reversal of 12181004448 is 84440018121.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (12181004449) 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 7 ways as a sum of consecutive naturals, for example, 360036 + ... + 392412.

It is an arithmetic number, because the mean of its divisors is an integer number (666339240).

Almost surely, 2^12181004448 is an apocalyptic number.

It is an amenable number.

12181004448 is an abundant number, since it is smaller than the sum of its proper divisors (19803279072).

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

12181004448 is a wasteful number, since it uses less digits than its factorization.

12181004448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36309 (or 36301 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The spelling of 12181004448 in words is "twelve billion, one hundred eighty-one million, four thousand, four hundred forty-eight".