204516302066 has 4 divisors (see below), whose sum is σ = 306774453102. Its totient is φ = 102258151032.

The previous prime is 204516302057. The next prime is 204516302099. The reversal of 204516302066 is 660203615402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660203615402 = 2 ⋅330101807701.

It can be written as a sum of positive squares in only one way, i.e., 196652337025 + 7863965041 = 443455^2 + 88679^2 .

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, 51129075515 + ... + 51129075518.

Almost surely, 2^204516302066 is an apocalyptic number.

204516302066 is a deficient number, since it is larger than the sum of its proper divisors (102258151036).

204516302066 is a wasteful number, since it uses less digits than its factorization.

204516302066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102258151035.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 204516302066 its reverse (660203615402), we get a palindrome (864719917468).

The spelling of 204516302066 in words is "two hundred four billion, five hundred sixteen million, three hundred two thousand, sixty-six".