218163993891300 has 144 divisors (see below), whose sum is σ = 701401560552000. Its totient is φ = 58173355468800.

The previous prime is 218163993891289. The next prime is 218163993891307. The reversal of 218163993891300 is 3198399361812.

218163993891300 is a `hidden beast` number, since 2 + 1 + 8 + 163 + 9 + 93 + 89 + 1 + 300 = 666.

It is not an unprimeable number, because it can be changed into a prime (218163993891307) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39905476 + ... + 45041924.

It is an arithmetic number, because the mean of its divisors is an integer number (4870844170500).

Almost surely, 2^{218163993891300} is an apocalyptic number.

218163993891300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218163993891300 is an abundant number, since it is smaller than the sum of its proper divisors (483237566660700).

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

218163993891300 is a wasteful number, since it uses less digits than its factorization.

218163993891300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5152203 (or 5152190 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 63.

The spelling of 218163993891300 in words is "two hundred eighteen trillion, one hundred sixty-three billion, nine hundred ninety-three million, eight hundred ninety-one thousand, three hundred".