205550013293 has 2 divisors, whose sum is σ = 205550013294. Its totient is φ = 205550013292.

The previous prime is 205550013287. The next prime is 205550013377. The reversal of 205550013293 is 392310055502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178973840809 + 26576172484 = 423053^2 + 163022^2 .

It is a cyclic number.

It is not a de Polignac number, because 205550013293 - 2³⁰ = 204476271469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205550013203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102775006646 + 102775006647.

It is an arithmetic number, because the mean of its divisors is an integer number (102775006647).

Almost surely, 2^205550013293 is an apocalyptic number.

It is an amenable number.

205550013293 is a deficient number, since it is larger than the sum of its proper divisors (1).

205550013293 is an equidigital number, since it uses as much as digits as its factorization.

205550013293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 35.

Adding to 205550013293 its reverse (392310055502), we get a palindrome (597860068795).

The spelling of 205550013293 in words is "two hundred five billion, five hundred fifty million, thirteen thousand, two hundred ninety-three".