18144666535167 has 6 divisors (see below), whose sum is σ = 26208962773032. Its totient is φ = 12096444356772.

The previous prime is 18144666535153. The next prime is 18144666535187. The reversal of 18144666535167 is 76153566644181.

It is a de Polignac number, because none of the positive numbers 2^k-18144666535167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18144666535187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1008037029723 + ... + 1008037029740.

It is an arithmetic number, because the mean of its divisors is an integer number (4368160462172).

Almost surely, 2^{18144666535167} is an apocalyptic number.

18144666535167 is a deficient number, since it is larger than the sum of its proper divisors (8064296237865).

18144666535167 is a wasteful number, since it uses less digits than its factorization.

18144666535167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016074059469 (or 2016074059466 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 18144666535167 in words is "eighteen trillion, one hundred forty-four billion, six hundred sixty-six million, five hundred thirty-five thousand, one hundred sixty-seven".