206702417069 has 2 divisors, whose sum is σ = 206702417070. Its totient is φ = 206702417068.

The previous prime is 206702417063. The next prime is 206702417083. The reversal of 206702417069 is 960714207602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201433108969 + 5269308100 = 448813^2 + 72590^2 .

It is a cyclic number.

It is not a de Polignac number, because 206702417069 - 2³² = 202407449773 is a prime.

It is a super-2 number, since 2×206702417069² (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 (206702417063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103351208534 + 103351208535.

It is an arithmetic number, because the mean of its divisors is an integer number (103351208535).

Almost surely, 2^206702417069 is an apocalyptic number.

It is an amenable number.

206702417069 is a deficient number, since it is larger than the sum of its proper divisors (1).

206702417069 is an equidigital number, since it uses as much as digits as its factorization.

206702417069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 206702417069 in words is "two hundred six billion, seven hundred two million, four hundred seventeen thousand, sixty-nine".