204644002313 has 8 divisors (see below), whose sum is σ = 216696584232. Its totient is φ = 192593053696.

The previous prime is 204644002301. The next prime is 204644002441. The reversal of 204644002313 is 313200446402.

It can be written as a sum of positive squares in 4 ways, for example, as 28590751744 + 176053250569 = 169088^2 + 419587^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204644002313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204644001313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145520 + ... + 656097.

It is an arithmetic number, because the mean of its divisors is an integer number (27087073029).

Almost surely, 2^204644002313 is an apocalyptic number.

It is an amenable number.

204644002313 is a deficient number, since it is larger than the sum of its proper divisors (12052581919).

204644002313 is a wasteful number, since it uses less digits than its factorization.

204644002313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816651.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 204644002313 its reverse (313200446402), we get a palindrome (517844448715).

The spelling of 204644002313 in words is "two hundred four billion, six hundred forty-four million, two thousand, three hundred thirteen".