206666283672 has 144 divisors (see below), whose sum is σ = 613764715200. Its totient is φ = 62744785920.

The previous prime is 206666283671. The next prime is 206666283701. The reversal of 206666283672 is 276382666602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206666283671) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 484854 + ... + 805242.

Almost surely, 2^206666283672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206666283672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306882357600).

206666283672 is an abundant number, since it is smaller than the sum of its proper divisors (407098431528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206666283672 is a wasteful number, since it uses less digits than its factorization.

206666283672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320466 (or 320442 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 54.

The spelling of 206666283672 in words is "two hundred six billion, six hundred sixty-six million, two hundred eighty-three thousand, six hundred seventy-two".