18018013668150 has 96 divisors (see below), whose sum is σ = 49803351845760. Its totient is φ = 4284159275520.

The previous prime is 18018013668119. The next prime is 18018013668199. The reversal of 18018013668150 is 5186631081081.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18018013668150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 185895964 + ... + 185992863.

It is an arithmetic number, because the mean of its divisors is an integer number (518784915060).

Almost surely, 2^{18018013668150} is an apocalyptic number.

18018013668150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18018013668150 is an abundant number, since it is smaller than the sum of its proper divisors (31785338177610).

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

18018013668150 is a wasteful number, since it uses less digits than its factorization.

18018013668150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371888878 (or 371888873 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 48.

The spelling of 18018013668150 in words is "eighteen trillion, eighteen billion, thirteen million, six hundred sixty-eight thousand, one hundred fifty".