218033994852 has 18 divisors (see below), whose sum is σ = 551141487078. Its totient is φ = 72677998272.

The previous prime is 218033994851. The next prime is 218033994881. The reversal of 218033994852 is 258499330812.

218033994852 is a `hidden beast` number, since 218 + 0 + 339 + 9 + 48 + 52 = 666.

218033994852 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 171987701796 + 46046293056 = 414714^2 + 214584^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×218033994852² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (218033994851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3028249893 + ... + 3028249964.

Almost surely, 2^218033994852 is an apocalyptic number.

It is an amenable number.

218033994852 is an abundant number, since it is smaller than the sum of its proper divisors (333107492226).

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

218033994852 is a wasteful number, since it uses less digits than its factorization.

218033994852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056499867 (or 6056499862 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 218033994852 in words is "two hundred eighteen billion, thirty-three million, nine hundred ninety-four thousand, eight hundred fifty-two".