218838552171 has 8 divisors (see below), whose sum is σ = 291815517504. Its totient is φ = 145876977480.

The previous prime is 218838552167. The next prime is 218838552181. The reversal of 218838552171 is 171255838812.

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

It is not a de Polignac number, because 218838552171 - 2² = 218838552167 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218838552161) 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, 3814441 + ... + 3871386.

It is an arithmetic number, because the mean of its divisors is an integer number (36476939688).

Almost surely, 2^218838552171 is an apocalyptic number.

218838552171 is a deficient number, since it is larger than the sum of its proper divisors (72976965333).

218838552171 is an equidigital number, since it uses as much as digits as its factorization.

218838552171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7695321.

The product of its digits is 1075200, while the sum is 51.

The spelling of 218838552171 in words is "two hundred eighteen billion, eight hundred thirty-eight million, five hundred fifty-two thousand, one hundred seventy-one".