206662666411 has 8 divisors (see below), whose sum is σ = 207544046400. Its totient is φ = 205781425920.

The previous prime is 206662666409. The next prime is 206662666433. The reversal of 206662666411 is 114666266602.

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

It is a cyclic number.

It is not a de Polignac number, because 206662666411 - 2¹ = 206662666409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206662666211) 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, 3852091 + ... + 3905371.

It is an arithmetic number, because the mean of its divisors is an integer number (25943005800).

Almost surely, 2^206662666411 is an apocalyptic number.

206662666411 is a deficient number, since it is larger than the sum of its proper divisors (881379989).

206662666411 is a wasteful number, since it uses less digits than its factorization.

206662666411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69749.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 206662666411 in words is "two hundred six billion, six hundred sixty-two million, six hundred sixty-six thousand, four hundred eleven".