218255538812 has 12 divisors (see below), whose sum is σ = 394268070336. Its totient is φ = 105607518720.

The previous prime is 218255538811. The next prime is 218255538817. The reversal of 218255538812 is 218835552812.

218255538812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218255538811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880062533 + ... + 880062780.

It is an arithmetic number, because the mean of its divisors is an integer number (32855672528).

Almost surely, 2^218255538812 is an apocalyptic number.

It is an amenable number.

218255538812 is a deficient number, since it is larger than the sum of its proper divisors (176012531524).

218255538812 is a wasteful number, since it uses less digits than its factorization.

218255538812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760125348 (or 1760125346 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 50.

The spelling of 218255538812 in words is "two hundred eighteen billion, two hundred fifty-five million, five hundred thirty-eight thousand, eight hundred twelve".