204545311504273 has 2 divisors, whose sum is σ = 204545311504274. Its totient is φ = 204545311504272.

The previous prime is 204545311504207. The next prime is 204545311504333. The reversal of 204545311504273 is 372405113545402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204426884670849 + 118426833424 = 14297793^2 + 344132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204545311504273 is a prime.

It is not a weakly prime, because it can be changed into another prime (204545311504973) 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, 102272655752136 + 102272655752137.

It is an arithmetic number, because the mean of its divisors is an integer number (102272655752137).

Almost surely, 2^{204545311504273} is an apocalyptic number.

It is an amenable number.

204545311504273 is a deficient number, since it is larger than the sum of its proper divisors (1).

204545311504273 is an equidigital number, since it uses as much as digits as its factorization.

204545311504273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016000, while the sum is 46.

The spelling of 204545311504273 in words is "two hundred four trillion, five hundred forty-five billion, three hundred eleven million, five hundred four thousand, two hundred seventy-three".