206497835039 has 2 divisors, whose sum is σ = 206497835040. Its totient is φ = 206497835038.

The previous prime is 206497835021. The next prime is 206497835069. The reversal of 206497835039 is 930538794602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206497835039 - 2⁸ = 206497834783 is a prime.

It is a super-2 number, since 2×206497835039² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206497835069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103248917519 + 103248917520.

It is an arithmetic number, because the mean of its divisors is an integer number (103248917520).

Almost surely, 2^206497835039 is an apocalyptic number.

206497835039 is a deficient number, since it is larger than the sum of its proper divisors (1).

206497835039 is an equidigital number, since it uses as much as digits as its factorization.

206497835039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 206497835039 in words is "two hundred six billion, four hundred ninety-seven million, eight hundred thirty-five thousand, thirty-nine".