204501323105 has 4 divisors (see below), whose sum is σ = 245401587732. Its totient is φ = 163601058480.

The previous prime is 204501323101. The next prime is 204501323137. The reversal of 204501323105 is 501323105402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153378756496 + 51122566609 = 391636^2 + 226103^2 .

It is not a de Polignac number, because 204501323105 - 2² = 204501323101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204501323101) 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, 20450132306 + ... + 20450132315.

It is an arithmetic number, because the mean of its divisors is an integer number (61350396933).

Almost surely, 2^204501323105 is an apocalyptic number.

It is an amenable number.

204501323105 is a deficient number, since it is larger than the sum of its proper divisors (40900264627).

204501323105 is an equidigital number, since it uses as much as digits as its factorization.

204501323105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40900264626.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 204501323105 its reverse (501323105402), we get a palindrome (705824428507).

The spelling of 204501323105 in words is "two hundred four billion, five hundred one million, three hundred twenty-three thousand, one hundred five".