218240878912 has 224 divisors, whose sum is σ = 548802560000. Its totient is φ = 85745640960.

The previous prime is 218240878883. The next prime is 218240878951. The reversal of 218240878912 is 219878042812.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 218240878912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12921289 + ... + 12938167.

Almost surely, 2^218240878912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218240878912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274401280000).

218240878912 is an abundant number, since it is smaller than the sum of its proper divisors (330561681088).

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

218240878912 is a wasteful number, since it uses less digits than its factorization.

218240878912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16962 (or 16938 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 218240878912 in words is "two hundred eighteen billion, two hundred forty million, eight hundred seventy-eight thousand, nine hundred twelve".