205368520052 has 6 divisors (see below), whose sum is σ = 359394910098. Its totient is φ = 102684260024.

The previous prime is 205368520037. The next prime is 205368520079. The reversal of 205368520052 is 250025863502.

It can be written as a sum of positive squares in only one way, i.e., 194336378896 + 11032141156 = 440836^2 + 105034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 205368519988 and 205368520015.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25671065003 + ... + 25671065010.

It is an arithmetic number, because the mean of its divisors is an integer number (59899151683).

Almost surely, 2^205368520052 is an apocalyptic number.

It is an amenable number.

205368520052 is a deficient number, since it is larger than the sum of its proper divisors (154026390046).

205368520052 is a wasteful number, since it uses less digits than its factorization.

205368520052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51342130017 (or 51342130015 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 205368520052 in words is "two hundred five billion, three hundred sixty-eight million, five hundred twenty thousand, fifty-two".