206166534506211 has 8 divisors (see below), whose sum is σ = 289356539657920. Its totient is φ = 130210442845992.

The previous prime is 206166534506209. The next prime is 206166534506281. The reversal of 206166534506211 is 112605435661602.

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 206166534506211 - 2¹ = 206166534506209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206166534506281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808478372805 + ... + 1808478372918.

It is an arithmetic number, because the mean of its divisors is an integer number (36169567457240).

Almost surely, 2^{206166534506211} is an apocalyptic number.

206166534506211 is a deficient number, since it is larger than the sum of its proper divisors (83190005151709).

206166534506211 is a wasteful number, since it uses less digits than its factorization.

206166534506211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616956745745.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 206166534506211 in words is "two hundred six trillion, one hundred sixty-six billion, five hundred thirty-four million, five hundred six thousand, two hundred eleven".