204336618361 has 2 divisors, whose sum is σ = 204336618362. Its totient is φ = 204336618360.

The previous prime is 204336618347. The next prime is 204336618373. The reversal of 204336618361 is 163816633402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107817662736 + 96518955625 = 328356^2 + 310675^2 .

It is a cyclic number.

It is not a de Polignac number, because 204336618361 - 2¹³ = 204336610169 is a prime.

It is not a weakly prime, because it can be changed into another prime (204336618341) by changing a digit.

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, 102168309180 + 102168309181.

It is an arithmetic number, because the mean of its divisors is an integer number (102168309181).

Almost surely, 2^204336618361 is an apocalyptic number.

It is an amenable number.

204336618361 is a deficient number, since it is larger than the sum of its proper divisors (1).

204336618361 is an equidigital number, since it uses as much as digits as its factorization.

204336618361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 204336618361 in words is "two hundred four billion, three hundred thirty-six million, six hundred eighteen thousand, three hundred sixty-one".