205265285782323 has 16 divisors (see below), whose sum is σ = 295121191105440. Its totient is φ = 126153687412224.

The previous prime is 205265285782279. The next prime is 205265285782363. The reversal of 205265285782323 is 323287582562502.

It is a happy number.

It is not a de Polignac number, because 205265285782323 - 2¹² = 205265285778227 is a prime.

It is a super-2 number, since 2×205265285782323² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205265285782363) 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 in 15 ways as a sum of consecutive naturals, for example, 3404376358 + ... + 3404436651.

It is an arithmetic number, because the mean of its divisors is an integer number (18445074444090).

Almost surely, 2^{205265285782323} is an apocalyptic number.

205265285782323 is a deficient number, since it is larger than the sum of its proper divisors (89855905323117).

205265285782323 is a wasteful number, since it uses less digits than its factorization.

205265285782323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808813798.

The product of its (nonzero) digits is 96768000, while the sum is 60.

The spelling of 205265285782323 in words is "two hundred five trillion, two hundred sixty-five billion, two hundred eighty-five million, seven hundred eighty-two thousand, three hundred twenty-three".