206267350397 has 2 divisors, whose sum is σ = 206267350398. Its totient is φ = 206267350396.

The previous prime is 206267350369. The next prime is 206267350423. The reversal of 206267350397 is 793053762602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179563215001 + 26704135396 = 423749^2 + 163414^2 .

It is a cyclic number.

It is not a de Polignac number, because 206267350397 - 2¹⁰ = 206267349373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206267350307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103133675198 + 103133675199.

It is an arithmetic number, because the mean of its divisors is an integer number (103133675199).

Almost surely, 2^206267350397 is an apocalyptic number.

It is an amenable number.

206267350397 is a deficient number, since it is larger than the sum of its proper divisors (1).

206267350397 is an equidigital number, since it uses as much as digits as its factorization.

206267350397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 50.

The spelling of 206267350397 in words is "two hundred six billion, two hundred sixty-seven million, three hundred fifty thousand, three hundred ninety-seven".