12736981018 has 32 divisors (see below), whose sum is σ = 20817907200. Its totient is φ = 5821510464.

The previous prime is 12736981013. The next prime is 12736981027. The reversal of 12736981018 is 81018963721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12736981013) 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 15 ways as a sum of consecutive naturals, for example, 2429496 + ... + 2434732.

It is an arithmetic number, because the mean of its divisors is an integer number (650559600).

Almost surely, 2^12736981018 is an apocalyptic number.

12736981018 is a deficient number, since it is larger than the sum of its proper divisors (8080926182).

12736981018 is a wasteful number, since it uses less digits than its factorization.

12736981018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7494.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 12736981018 in words is "twelve billion, seven hundred thirty-six million, nine hundred eighty-one thousand, eighteen".