206240060161 has 2 divisors, whose sum is σ = 206240060162. Its totient is φ = 206240060160.

The previous prime is 206240060149. The next prime is 206240060261. The reversal of 206240060161 is 161060042602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203902821136 + 2337239025 = 451556^2 + 48345^2 .

It is a cyclic number.

It is not a de Polignac number, because 206240060161 - 2¹⁷ = 206239929089 is a prime.

It is not a weakly prime, because it can be changed into another prime (206240060261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103120030080 + 103120030081.

It is an arithmetic number, because the mean of its divisors is an integer number (103120030081).

Almost surely, 2^206240060161 is an apocalyptic number.

It is an amenable number.

206240060161 is a deficient number, since it is larger than the sum of its proper divisors (1).

206240060161 is an equidigital number, since it uses as much as digits as its factorization.

206240060161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 206240060161 in words is "two hundred six billion, two hundred forty million, sixty thousand, one hundred sixty-one".