206611296091 has 2 divisors, whose sum is σ = 206611296092. Its totient is φ = 206611296090.

The previous prime is 206611296083. The next prime is 206611296107. The reversal of 206611296091 is 190692116602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206611296091 - 2³ = 206611296083 is a prime.

It is not a weakly prime, because it can be changed into another prime (206611296011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103305648045 + 103305648046.

It is an arithmetic number, because the mean of its divisors is an integer number (103305648046).

Almost surely, 2^206611296091 is an apocalyptic number.

206611296091 is a deficient number, since it is larger than the sum of its proper divisors (1).

206611296091 is an equidigital number, since it uses as much as digits as its factorization.

206611296091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 206611296091 in words is "two hundred six billion, six hundred eleven million, two hundred ninety-six thousand, ninety-one".