206678216841 has 8 divisors (see below), whose sum is σ = 280770408000. Its totient is φ = 135185751792.

The previous prime is 206678216831. The next prime is 206678216881. The reversal of 206678216841 is 148612876602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206678216841 - 2⁵ = 206678216809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206678216831) 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, 649931341 + ... + 649931658.

It is an arithmetic number, because the mean of its divisors is an integer number (35096301000).

Almost surely, 2^206678216841 is an apocalyptic number.

It is an amenable number.

206678216841 is a deficient number, since it is larger than the sum of its proper divisors (74092191159).

206678216841 is a wasteful number, since it uses less digits than its factorization.

206678216841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299863055.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 206678216841 in words is "two hundred six billion, six hundred seventy-eight million, two hundred sixteen thousand, eight hundred forty-one".