204072513735173 has 2 divisors, whose sum is σ = 204072513735174. Its totient is φ = 204072513735172.

The previous prime is 204072513735131. The next prime is 204072513735191. The reversal of 204072513735173 is 371537315270402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156356443122049 + 47716070613124 = 12504257^2 + 6907682^2 .

It is a cyclic number.

It is not a de Polignac number, because 204072513735173 - 2¹² = 204072513731077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204072513765173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102036256867586 + 102036256867587.

It is an arithmetic number, because the mean of its divisors is an integer number (102036256867587).

Almost surely, 2^{204072513735173} is an apocalyptic number.

It is an amenable number.

204072513735173 is a deficient number, since it is larger than the sum of its proper divisors (1).

204072513735173 is an equidigital number, since it uses as much as digits as its factorization.

204072513735173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3704400, while the sum is 50.

The spelling of 204072513735173 in words is "two hundred four trillion, seventy-two billion, five hundred thirteen million, seven hundred thirty-five thousand, one hundred seventy-three".