206542630039 has 2 divisors, whose sum is σ = 206542630040. Its totient is φ = 206542630038.

The previous prime is 206542630033. The next prime is 206542630061. The reversal of 206542630039 is 930036245602.

206542630039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206542630039 - 2³ = 206542630031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206542629983 and 206542630010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206542630031) 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, 103271315019 + 103271315020.

It is an arithmetic number, because the mean of its divisors is an integer number (103271315020).

Almost surely, 2^206542630039 is an apocalyptic number.

206542630039 is a deficient number, since it is larger than the sum of its proper divisors (1).

206542630039 is an equidigital number, since it uses as much as digits as its factorization.

206542630039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 206542630039 in words is "two hundred six billion, five hundred forty-two million, six hundred thirty thousand, thirty-nine".