218143545341812 has 24 divisors (see below), whose sum is σ = 382399031702016. Its totient is φ = 108886706056128.

The previous prime is 218143545341773. The next prime is 218143545341833.

218143545341812 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 218143545341812.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 29128813 + ... + 35843755.

It is an arithmetic number, because the mean of its divisors is an integer number (15933292987584).

Almost surely, 2^{218143545341812} is an apocalyptic number.

It is an amenable number.

218143545341812 is a deficient number, since it is larger than the sum of its proper divisors (164255486360204).

218143545341812 is a wasteful number, since it uses less digits than its factorization.

218143545341812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728727 (or 6728725 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 52.

The spelling of 218143545341812 in words is "two hundred eighteen trillion, one hundred forty-three billion, five hundred forty-five million, three hundred forty-one thousand, eight hundred twelve".