204044404232381 has 2 divisors, whose sum is σ = 204044404232382. Its totient is φ = 204044404232380.

The previous prime is 204044404232359. The next prime is 204044404232563. The reversal of 204044404232381 is 183232404440402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172451393805625 + 31593010426756 = 13132075^2 + 5620766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204044404232381 is a prime.

It is a super-2 number, since 2×204044404232381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204044403232381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102022202116190 + 102022202116191.

It is an arithmetic number, because the mean of its divisors is an integer number (102022202116191).

Almost surely, 2^{204044404232381} is an apocalyptic number.

It is an amenable number.

204044404232381 is a deficient number, since it is larger than the sum of its proper divisors (1).

204044404232381 is an equidigital number, since it uses as much as digits as its factorization.

204044404232381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 589824, while the sum is 41.

Adding to 204044404232381 its reverse (183232404440402), we get a palindrome (387276808672783).

The spelling of 204044404232381 in words is "two hundred four trillion, forty-four billion, four hundred four million, two hundred thirty-two thousand, three hundred eighty-one".