218064336213831 has 8 divisors (see below), whose sum is σ = 290934509937264. Its totient is φ = 145285193316480.

The previous prime is 218064336213821. The next prime is 218064336213859. The reversal of 218064336213831 is 138312633460812.

It is a happy number.

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

It is not a de Polignac number, because 218064336213831 - 2¹⁷ = 218064336082759 is a prime.

It is a super-2 number, since 2×218064336213831² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218064336213811) 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, 22757700930 + ... + 22757710511.

It is an arithmetic number, because the mean of its divisors is an integer number (36366813742158).

Almost surely, 2^{218064336213831} is an apocalyptic number.

218064336213831 is a deficient number, since it is larger than the sum of its proper divisors (72870173723433).

218064336213831 is a wasteful number, since it uses less digits than its factorization.

218064336213831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45515413041.

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 218064336213831 in words is "two hundred eighteen trillion, sixty-four billion, three hundred thirty-six million, two hundred thirteen thousand, eight hundred thirty-one".