218853836672 has 32 divisors (see below), whose sum is σ = 438608686320. Its totient is φ = 108771656704.

The previous prime is 218853836671. The next prime is 218853836701. The reversal of 218853836672 is 276638358812.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218853836671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5097773 + ... + 5140524.

Almost surely, 2^218853836672 is an apocalyptic number.

It is an amenable number.

218853836672 is an abundant number, since it is smaller than the sum of its proper divisors (219754849648).

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

218853836672 is a wasteful number, since it uses less digits than its factorization.

218853836672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10238478 (or 10238466 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 59.

The spelling of 218853836672 in words is "two hundred eighteen billion, eight hundred fifty-three million, eight hundred thirty-six thousand, six hundred seventy-two".