206073540641 has 2 divisors, whose sum is σ = 206073540642. Its totient is φ = 206073540640.

The previous prime is 206073540623. The next prime is 206073540671. The reversal of 206073540641 is 146045370602.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197428260241 + 8645280400 = 444329^2 + 92980^2 .

It is a cyclic number.

It is not a de Polignac number, because 206073540641 - 2¹⁸ = 206073278497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206073540595 and 206073540604.

It is not a weakly prime, because it can be changed into another prime (206073540601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103036770320 + 103036770321.

It is an arithmetic number, because the mean of its divisors is an integer number (103036770321).

Almost surely, 2^206073540641 is an apocalyptic number.

It is an amenable number.

206073540641 is a deficient number, since it is larger than the sum of its proper divisors (1).

206073540641 is an equidigital number, since it uses as much as digits as its factorization.

206073540641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 206073540641 in words is "two hundred six billion, seventy-three million, five hundred forty thousand, six hundred forty-one".