218230798032 has 120 divisors (see below), whose sum is σ = 660099398504. Its totient is φ = 66905367552.

The previous prime is 218230798007. The next prime is 218230798033. The reversal of 218230798032 is 230897032812.

It can be written as a sum of positive squares in 4 ways, for example, as 7847125056 + 210383672976 = 88584^2 + 458676^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218230798033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 308118 + ... + 728970.

Almost surely, 2^218230798032 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 218230798032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330049699252).

218230798032 is an abundant number, since it is smaller than the sum of its proper divisors (441868600472).

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

218230798032 is a wasteful number, since it uses less digits than its factorization.

218230798032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421157 (or 421148 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 218230798032 in words is "two hundred eighteen billion, two hundred thirty million, seven hundred ninety-eight thousand, thirty-two".