206216090771076 has 81 divisors (see below), whose sum is σ = 523493079185349. Its totient is φ = 68446581206400.

The previous prime is 206216090771063. The next prime is 206216090771099. The reversal of 206216090771076 is 670177090612602.

The square root of 206216090771076 is 14360226.

It is a perfect power (a square), and thus also a powerful number.

206216090771076 is a `hidden beast` number, since 2 + 0 + 6 + 21 + 609 + 0 + 7 + 7 + 1 + 0 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 155089014668676 + 51127076102400 = 12453474^2 + 7150320^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 20764881831 + ... + 20764891761.

Almost surely, 2^{206216090771076} is an apocalyptic number.

206216090771076 is the 14360226-th square number.

It is an amenable number.

206216090771076 is an abundant number, since it is smaller than the sum of its proper divisors (317276988414273).

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

206216090771076 is an frugal number, since it uses more digits than its factorization.

206216090771076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20354 (or 10177 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 206216090771076 in words is "two hundred six trillion, two hundred sixteen billion, ninety million, seven hundred seventy-one thousand, seventy-six".