12180038836 has 24 divisors (see below), whose sum is σ = 24403377600. Its totient is φ = 5210738112.

The previous prime is 12180038833. The next prime is 12180038851. The reversal of 12180038836 is 63883008121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12180038833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370561 + ... + 402088.

It is an arithmetic number, because the mean of its divisors is an integer number (1016807400).

Almost surely, 2^12180038836 is an apocalyptic number.

It is an amenable number.

12180038836 is an abundant number, since it is smaller than the sum of its proper divisors (12223338764).

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

12180038836 is a wasteful number, since it uses less digits than its factorization.

12180038836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773223 (or 773221 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 12180038836 in words is "twelve billion, one hundred eighty million, thirty-eight thousand, eight hundred thirty-six".