205103504104 has 16 divisors (see below), whose sum is σ = 384575760900. Its totient is φ = 102549967872.

The previous prime is 205103504101. The next prime is 205103504143. The reversal of 205103504104 is 401405301502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 172848062500 + 32255441604 = 415750^2 + 179598^2 .

It is not an unprimeable number, because it can be changed into a prime (205103504101) 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, 353082 + ... + 731350.

Almost surely, 2^205103504104 is an apocalyptic number.

It is an amenable number.

205103504104 is a deficient number, since it is larger than the sum of its proper divisors (179472256796).

205103504104 is a wasteful number, since it uses less digits than its factorization.

205103504104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446052 (or 446048 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 205103504104 its reverse (401405301502), we get a palindrome (606508805606).

The spelling of 205103504104 in words is "two hundred five billion, one hundred three million, five hundred four thousand, one hundred four".