206115170797 has 2 divisors, whose sum is σ = 206115170798. Its totient is φ = 206115170796.

The previous prime is 206115170791. The next prime is 206115170801. The reversal of 206115170797 is 797071511602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116577176356 + 89537994441 = 341434^2 + 299229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206115170797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206115170791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103057585398 + 103057585399.

It is an arithmetic number, because the mean of its divisors is an integer number (103057585399).

Almost surely, 2^206115170797 is an apocalyptic number.

It is an amenable number.

206115170797 is a deficient number, since it is larger than the sum of its proper divisors (1).

206115170797 is an equidigital number, since it uses as much as digits as its factorization.

206115170797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185220, while the sum is 46.

The spelling of 206115170797 in words is "two hundred six billion, one hundred fifteen million, one hundred seventy thousand, seven hundred ninety-seven".