218162199804 has 96 divisors (see below), whose sum is σ = 538165555200. Its totient is φ = 68672862720.

The previous prime is 218162199797. The next prime is 218162199823. The reversal of 218162199804 is 408991261812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30598512 + ... + 30605640.

It is an arithmetic number, because the mean of its divisors is an integer number (5605891200).

Almost surely, 2^218162199804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218162199804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269082777600).

218162199804 is an abundant number, since it is smaller than the sum of its proper divisors (320003355396).

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

218162199804 is a wasteful number, since it uses less digits than its factorization.

218162199804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9083 (or 9081 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 51.

The spelling of 218162199804 in words is "two hundred eighteen billion, one hundred sixty-two million, one hundred ninety-nine thousand, eight hundred four".