12798909018 has 24 divisors (see below), whose sum is σ = 31692536928. Its totient is φ = 3656831112.

The previous prime is 12798909001. The next prime is 12798909043. The reversal of 12798909018 is 81090989721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50789196 + ... + 50789447.

It is an arithmetic number, because the mean of its divisors is an integer number (1320522372).

Almost surely, 2^12798909018 is an apocalyptic number.

12798909018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12798909018 is an abundant number, since it is smaller than the sum of its proper divisors (18893627910).

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

12798909018 is a wasteful number, since it uses less digits than its factorization.

12798909018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101578658 (or 101578655 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 54.

The spelling of 12798909018 in words is "twelve billion, seven hundred ninety-eight million, nine hundred nine thousand, eighteen".