218944190512 has 80 divisors (see below), whose sum is σ = 449899141120. Its totient is φ = 102930912000.

The previous prime is 218944190473. The next prime is 218944190533. The reversal of 218944190512 is 215091449812.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23921137 + ... + 23930287.

It is an arithmetic number, because the mean of its divisors is an integer number (5623739264).

Almost surely, 2^218944190512 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 218944190512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224949570560).

218944190512 is an abundant number, since it is smaller than the sum of its proper divisors (230954950608).

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

218944190512 is a wasteful number, since it uses less digits than its factorization.

218944190512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9762 (or 9756 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 218944190512 in words is "two hundred eighteen billion, nine hundred forty-four million, one hundred ninety thousand, five hundred twelve".