204793225621 has 2 divisors, whose sum is σ = 204793225622. Its totient is φ = 204793225620.

The previous prime is 204793225531. The next prime is 204793225667. The reversal of 204793225621 is 126522397402.

204793225621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197056088100 + 7737137521 = 443910^2 + 87961^2 .

It is a cyclic number.

It is not a de Polignac number, because 204793225621 - 2¹¹ = 204793223573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204793225691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102396612810 + 102396612811.

It is an arithmetic number, because the mean of its divisors is an integer number (102396612811).

Almost surely, 2^204793225621 is an apocalyptic number.

It is an amenable number.

204793225621 is a deficient number, since it is larger than the sum of its proper divisors (1).

204793225621 is an equidigital number, since it uses as much as digits as its factorization.

204793225621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 204793225621 in words is "two hundred four billion, seven hundred ninety-three million, two hundred twenty-five thousand, six hundred twenty-one".