206140263937 has 2 divisors, whose sum is σ = 206140263938. Its totient is φ = 206140263936.

The previous prime is 206140263913. The next prime is 206140263941. The reversal of 206140263937 is 739362041602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203476775056 + 2663488881 = 451084^2 + 51609^2 .

It is a cyclic number.

It is not a de Polignac number, because 206140263937 - 2¹¹ = 206140261889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206140263893 and 206140263902.

It is not a weakly prime, because it can be changed into another prime (206140263907) 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, 103070131968 + 103070131969.

It is an arithmetic number, because the mean of its divisors is an integer number (103070131969).

Almost surely, 2^206140263937 is an apocalyptic number.

It is an amenable number.

206140263937 is a deficient number, since it is larger than the sum of its proper divisors (1).

206140263937 is an equidigital number, since it uses as much as digits as its factorization.

206140263937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

The spelling of 206140263937 in words is "two hundred six billion, one hundred forty million, two hundred sixty-three thousand, nine hundred thirty-seven".