205033550149 has 2 divisors, whose sum is σ = 205033550150. Its totient is φ = 205033550148.

The previous prime is 205033550143. The next prime is 205033550213. The reversal of 205033550149 is 941055330502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194430729249 + 10602820900 = 440943^2 + 102970^2 .

It is a cyclic number.

It is not a de Polignac number, because 205033550149 - 2⁷ = 205033550021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205033550143) 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, 102516775074 + 102516775075.

It is an arithmetic number, because the mean of its divisors is an integer number (102516775075).

Almost surely, 2^205033550149 is an apocalyptic number.

It is an amenable number.

205033550149 is a deficient number, since it is larger than the sum of its proper divisors (1).

205033550149 is an equidigital number, since it uses as much as digits as its factorization.

205033550149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 205033550149 in words is "two hundred five billion, thirty-three million, five hundred fifty thousand, one hundred forty-nine".