218065309528 has 64 divisors (see below), whose sum is σ = 463405082400. Its totient is φ = 95291642880.

The previous prime is 218065309523. The next prime is 218065309537. The reversal of 218065309528 is 825903560812.

It is a happy number.

218065309528 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 (218065309523) 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 15 ways as a sum of consecutive naturals, for example, 411250 + ... + 777982.

Almost surely, 2^218065309528 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 218065309528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231702541200).

218065309528 is an abundant number, since it is smaller than the sum of its proper divisors (245339772872).

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

218065309528 is a wasteful number, since it uses less digits than its factorization.

218065309528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367012 (or 367008 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 218065309528 in words is "two hundred eighteen billion, sixty-five million, three hundred nine thousand, five hundred twenty-eight".