214518689665 has 16 divisors (see below), whose sum is σ = 294236029440. Its totient is φ = 147079045440.

The previous prime is 214518689647. The next prime is 214518689681. The reversal of 214518689665 is 566986815412.

It is not a de Polignac number, because 214518689665 - 2⁹ = 214518689153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135385 + ... + 668854.

It is an arithmetic number, because the mean of its divisors is an integer number (18389751840).

Almost surely, 2^214518689665 is an apocalyptic number.

It is an amenable number.

214518689665 is a deficient number, since it is larger than the sum of its proper divisors (79717339775).

214518689665 is an equidigital number, since it uses as much as digits as its factorization.

214518689665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811872.

The product of its digits is 24883200, while the sum is 61.

The spelling of 214518689665 in words is "two hundred fourteen billion, five hundred eighteen million, six hundred eighty-nine thousand, six hundred sixty-five".