205033550201 has 4 divisors (see below), whose sum is σ = 208394756004. Its totient is φ = 201672344400.

The previous prime is 205033550149. The next prime is 205033550213. The reversal of 205033550201 is 102055330502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102055330502 = 2 ⋅51027665251.

It can be written as a sum of positive squares in 2 ways, for example, as 76299698176 + 128733852025 = 276224^2 + 358795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205033550201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205033552201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680602810 + ... + 1680602931.

It is an arithmetic number, because the mean of its divisors is an integer number (52098689001).

Almost surely, 2^205033550201 is an apocalyptic number.

It is an amenable number.

205033550201 is a deficient number, since it is larger than the sum of its proper divisors (3361205803).

205033550201 is an equidigital number, since it uses as much as digits as its factorization.

205033550201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361205802.

The product of its (nonzero) digits is 4500, while the sum is 26.

Adding to 205033550201 its reverse (102055330502), we get a palindrome (307088880703).

The spelling of 205033550201 in words is "two hundred five billion, thirty-three million, five hundred fifty thousand, two hundred one".