206403244669 has 2 divisors, whose sum is σ = 206403244670. Its totient is φ = 206403244668.

The previous prime is 206403244603. The next prime is 206403244687. The reversal of 206403244669 is 966442304602.

206403244669 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., 158892323769 + 47510920900 = 398613^2 + 217970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206403244669 is a prime.

It is a super-2 number, since 2×206403244669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206403245669) 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, 103201622334 + 103201622335.

It is an arithmetic number, because the mean of its divisors is an integer number (103201622335).

Almost surely, 2^206403244669 is an apocalyptic number.

It is an amenable number.

206403244669 is a deficient number, since it is larger than the sum of its proper divisors (1).

206403244669 is an equidigital number, since it uses as much as digits as its factorization.

206403244669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 206403244669 in words is "two hundred six billion, four hundred three million, two hundred forty-four thousand, six hundred sixty-nine".