204044144221009 has 2 divisors, whose sum is σ = 204044144221010. Its totient is φ = 204044144221008.

The previous prime is 204044144220919. The next prime is 204044144221013. The reversal of 204044144221009 is 900122441440402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180682659330625 + 23361484890384 = 13441825^2 + 4833372^2 .

It is a cyclic number.

It is not a de Polignac number, because 204044144221009 - 2¹¹ = 204044144218961 is a prime.

It is not a weakly prime, because it can be changed into another prime (204044144221409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102022072110504 + 102022072110505.

It is an arithmetic number, because the mean of its divisors is an integer number (102022072110505).

Almost surely, 2^{204044144221009} is an apocalyptic number.

It is an amenable number.

204044144221009 is a deficient number, since it is larger than the sum of its proper divisors (1).

204044144221009 is an equidigital number, since it uses as much as digits as its factorization.

204044144221009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 204044144221009 in words is "two hundred four trillion, forty-four billion, one hundred forty-four million, two hundred twenty-one thousand, nine".