204060136817 has 2 divisors, whose sum is σ = 204060136818. Its totient is φ = 204060136816.

The previous prime is 204060136801. The next prime is 204060136867. The reversal of 204060136817 is 718631060402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151292993296 + 52767143521 = 388964^2 + 229711^2 .

It is a cyclic number.

It is not a de Polignac number, because 204060136817 - 2⁴ = 204060136801 is a prime.

It is not a weakly prime, because it can be changed into another prime (204060136867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102030068408 + 102030068409.

It is an arithmetic number, because the mean of its divisors is an integer number (102030068409).

Almost surely, 2^204060136817 is an apocalyptic number.

It is an amenable number.

204060136817 is a deficient number, since it is larger than the sum of its proper divisors (1).

204060136817 is an equidigital number, since it uses as much as digits as its factorization.

204060136817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 204060136817 in words is "two hundred four billion, sixty million, one hundred thirty-six thousand, eight hundred seventeen".