218064336213832 has 16 divisors (see below), whose sum is σ = 409478164780140. Its totient is φ = 108870158939136.

The previous prime is 218064336213821. The next prime is 218064336213859. The reversal of 218064336213832 is 238312633460812.

It can be written as a sum of positive squares in 2 ways, for example, as 218038122660996 + 26213552836 = 14766114^2 + 161906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 218064336213832.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20251140253 + ... + 20251151020.

Almost surely, 2^{218064336213832} is an apocalyptic number.

It is an amenable number.

218064336213832 is a deficient number, since it is larger than the sum of its proper divisors (191413828566308).

218064336213832 is a wasteful number, since it uses less digits than its factorization.

218064336213832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40502291952 (or 40502291948 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 52.

The spelling of 218064336213832 in words is "two hundred eighteen trillion, sixty-four billion, three hundred thirty-six million, two hundred thirteen thousand, eight hundred thirty-two".