218204354810173 has 8 divisors (see below), whose sum is σ = 218377362379392. Its totient is φ = 218031408654336.

The previous prime is 218204354810161. The next prime is 218204354810179. The reversal of 218204354810173 is 371018453402812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218204354810173 is a prime.

It is a super-2 number, since 2×218204354810173² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218204354810179) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8243140 + ... + 22457917.

It is an arithmetic number, because the mean of its divisors is an integer number (27297170297424).

Almost surely, 2^{218204354810173} is an apocalyptic number.

It is an amenable number.

218204354810173 is a deficient number, since it is larger than the sum of its proper divisors (173007569219).

218204354810173 is a wasteful number, since it uses less digits than its factorization.

218204354810173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30706691.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 218204354810173 in words is "two hundred eighteen trillion, two hundred four billion, three hundred fifty-four million, eight hundred ten thousand, one hundred seventy-three".