205350700549 has 2 divisors, whose sum is σ = 205350700550. Its totient is φ = 205350700548.

The previous prime is 205350700487. The next prime is 205350700573. The reversal of 205350700549 is 945007053502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166060325025 + 39290375524 = 407505^2 + 198218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205350700549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205350700249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102675350274 + 102675350275.

It is an arithmetic number, because the mean of its divisors is an integer number (102675350275).

Almost surely, 2^205350700549 is an apocalyptic number.

It is an amenable number.

205350700549 is a deficient number, since it is larger than the sum of its proper divisors (1).

205350700549 is an equidigital number, since it uses as much as digits as its factorization.

205350700549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 189000, while the sum is 40.

The spelling of 205350700549 in words is "two hundred five billion, three hundred fifty million, seven hundred thousand, five hundred forty-nine".