218201218873 has 8 divisors (see below), whose sum is σ = 238056147360. Its totient is φ = 198349366080.

The previous prime is 218201218871. The next prime is 218201218897. The reversal of 218201218873 is 378812102812.

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

It is a cyclic number.

It is not a de Polignac number, because 218201218873 - 2¹ = 218201218871 is a prime.

It is a super-2 number, since 2×218201218873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218201218871) 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, 619315 + ... + 905512.

It is an arithmetic number, because the mean of its divisors is an integer number (29757018420).

Almost surely, 2^218201218873 is an apocalyptic number.

It is an amenable number.

218201218873 is a deficient number, since it is larger than the sum of its proper divisors (19854928487).

218201218873 is a wasteful number, since it uses less digits than its factorization.

218201218873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537847.

The product of its (nonzero) digits is 86016, while the sum is 43.

The spelling of 218201218873 in words is "two hundred eighteen billion, two hundred one million, two hundred eighteen thousand, eight hundred seventy-three".