216166249316146 has 4 divisors (see below), whose sum is σ = 324249373974222. Its totient is φ = 108083124658072.

The previous prime is 216166249316107. The next prime is 216166249316167. The reversal of 216166249316146 is 641613942661612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 152172825147225 + 63993424168921 = 12335835^2 + 7999589^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54041562329035 + ... + 54041562329038.

Almost surely, 2^{216166249316146} is an apocalyptic number.

216166249316146 is a deficient number, since it is larger than the sum of its proper divisors (108083124658076).

216166249316146 is a wasteful number, since it uses less digits than its factorization.

216166249316146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108083124658075.

The product of its digits is 13436928, while the sum is 58.

The spelling of 216166249316146 in words is "two hundred sixteen trillion, one hundred sixty-six billion, two hundred forty-nine million, three hundred sixteen thousand, one hundred forty-six".