216025343665166 has 16 divisors (see below), whose sum is σ = 370329377447904. Its totient is φ = 92582235922464.

The previous prime is 216025343665123. The next prime is 216025343665171. The reversal of 216025343665166 is 661566343520612.

It is a congruent number.

It is an unprimeable number.

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, 28623656 + ... + 35374628.

It is an arithmetic number, because the mean of its divisors is an integer number (23145586090494).

Almost surely, 2^{216025343665166} is an apocalyptic number.

216025343665166 is a deficient number, since it is larger than the sum of its proper divisors (154304033782738).

216025343665166 is a wasteful number, since it uses less digits than its factorization.

216025343665166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9036635.

The product of its (nonzero) digits is 27993600, while the sum is 56.

The spelling of 216025343665166 in words is "two hundred sixteen trillion, twenty-five billion, three hundred forty-three million, six hundred sixty-five thousand, one hundred sixty-six".