205544241233 has 2 divisors, whose sum is σ = 205544241234. Its totient is φ = 205544241232.

The previous prime is 205544241191. The next prime is 205544241277. The reversal of 205544241233 is 332142445502.

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., 205542543424 + 1697809 = 453368^2 + 1303^2 .

It is a cyclic number.

It is not a de Polignac number, because 205544241233 - 2⁸ = 205544240977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205544241193 and 205544241202.

It is not a weakly prime, because it can be changed into another prime (205544241293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102772120616 + 102772120617.

It is an arithmetic number, because the mean of its divisors is an integer number (102772120617).

Almost surely, 2^205544241233 is an apocalyptic number.

It is an amenable number.

205544241233 is a deficient number, since it is larger than the sum of its proper divisors (1).

205544241233 is an equidigital number, since it uses as much as digits as its factorization.

205544241233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 205544241233 its reverse (332142445502), we get a palindrome (537686686735).

The spelling of 205544241233 in words is "two hundred five billion, five hundred forty-four million, two hundred forty-one thousand, two hundred thirty-three".