218602684220 has 12 divisors (see below), whose sum is σ = 459065636904. Its totient is φ = 87441073680.

The previous prime is 218602684211. The next prime is 218602684271. The reversal of 218602684220 is 22486206812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5465067086 + ... + 5465067125.

It is an arithmetic number, because the mean of its divisors is an integer number (38255469742).

Almost surely, 2^218602684220 is an apocalyptic number.

218602684220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218602684220 is an abundant number, since it is smaller than the sum of its proper divisors (240462952684).

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

218602684220 is a wasteful number, since it uses less digits than its factorization.

218602684220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10930134220 (or 10930134218 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 218602684220 in words is "two hundred eighteen billion, six hundred two million, six hundred eighty-four thousand, two hundred twenty".