218343883072 has 28 divisors (see below), whose sum is σ = 495172735840. Its totient is φ = 93575949696.

The previous prime is 218343883057. The next prime is 218343883097. The reversal of 218343883072 is 270388343812.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243686922 + ... + 243687817.

Almost surely, 2^218343883072 is an apocalyptic number.

It is an amenable number.

218343883072 is an abundant number, since it is smaller than the sum of its proper divisors (276828852768).

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

218343883072 is an equidigital number, since it uses as much as digits as its factorization.

218343883072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487374758 (or 487374748 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 218343883072 in words is "two hundred eighteen billion, three hundred forty-three million, eight hundred eighty-three thousand, seventy-two".