12998169018 has 96 divisors (see below), whose sum is σ = 29158758720. Its totient is φ = 4182865920.

The previous prime is 12998169017. The next prime is 12998169029. The reversal of 12998169018 is 81096189921.

It is not an unprimeable number, because it can be changed into a prime (12998169011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17588493 + ... + 17589231.

It is an arithmetic number, because the mean of its divisors is an integer number (303737070).

Almost surely, 2^12998169018 is an apocalyptic number.

12998169018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12998169018 is an abundant number, since it is smaller than the sum of its proper divisors (16160589702).

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

12998169018 is a wasteful number, since it uses less digits than its factorization.

12998169018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 54.

The spelling of 12998169018 in words is "twelve billion, nine hundred ninety-eight million, one hundred sixty-nine thousand, eighteen".