218168484443064 has 80 divisors (see below), whose sum is σ = 612410906844000. Its totient is φ = 72563697134208.

The previous prime is 218168484443047. The next prime is 218168484443071. The reversal of 218168484443064 is 460344484861812.

218168484443064 is a `hidden beast` number, since 2 + 1 + 8 + 1 + 68 + 4 + 84 + 4 + 430 + 64 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 218168484442992 and 218168484443010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 368062464 + ... + 368654735.

It is an arithmetic number, because the mean of its divisors is an integer number (7655136335550).

Almost surely, 2^{218168484443064} is an apocalyptic number.

218168484443064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

218168484443064 is an abundant number, since it is smaller than the sum of its proper divisors (394242422400936).

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

218168484443064 is a wasteful number, since it uses less digits than its factorization.

218168484443064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736717674 (or 736717661 counting only the distinct ones).

The product of its (nonzero) digits is 113246208, while the sum is 63.

The spelling of 218168484443064 in words is "two hundred eighteen trillion, one hundred sixty-eight billion, four hundred eighty-four million, four hundred forty-three thousand, sixty-four".