206756083081 has 2 divisors, whose sum is σ = 206756083082. Its totient is φ = 206756083080.

The previous prime is 206756083021. The next prime is 206756083099. The reversal of 206756083081 is 180380657602.

206756083081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174494175625 + 32261907456 = 417725^2 + 179616^2 .

It is a cyclic number.

It is not a de Polignac number, because 206756083081 - 2¹¹ = 206756081033 is a prime.

It is a super-2 number, since 2×206756083081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206756083021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103378041540 + 103378041541.

It is an arithmetic number, because the mean of its divisors is an integer number (103378041541).

Almost surely, 2^206756083081 is an apocalyptic number.

It is an amenable number.

206756083081 is a deficient number, since it is larger than the sum of its proper divisors (1).

206756083081 is an equidigital number, since it uses as much as digits as its factorization.

206756083081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 206756083081 in words is "two hundred six billion, seven hundred fifty-six million, eighty-three thousand, eighty-one".