218018208846 has 8 divisors (see below), whose sum is σ = 436036417704. Its totient is φ = 72672736280.

The previous prime is 218018208841. The next prime is 218018208853. The reversal of 218018208846 is 648802810812.

218018208846 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

218018208846 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 218018208795 and 218018208804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218018208841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18168184065 + ... + 18168184076.

It is an arithmetic number, because the mean of its divisors is an integer number (54504552213).

Almost surely, 2^218018208846 is an apocalyptic number.

218018208846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

218018208846 is a wasteful number, since it uses less digits than its factorization.

218018208846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36336368146.

The product of its (nonzero) digits is 393216, while the sum is 48.

The spelling of 218018208846 in words is "two hundred eighteen billion, eighteen million, two hundred eight thousand, eight hundred forty-six".