204161904043 has 2 divisors, whose sum is σ = 204161904044. Its totient is φ = 204161904042.

The previous prime is 204161904013. The next prime is 204161904047. The reversal of 204161904043 is 340409161402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204161904043 - 2¹³ = 204161895851 is a prime.

It is not a weakly prime, because it can be changed into another prime (204161904047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102080952021 + 102080952022.

It is an arithmetic number, because the mean of its divisors is an integer number (102080952022).

Almost surely, 2^204161904043 is an apocalyptic number.

204161904043 is a deficient number, since it is larger than the sum of its proper divisors (1).

204161904043 is an equidigital number, since it uses as much as digits as its factorization.

204161904043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 204161904043 in words is "two hundred four billion, one hundred sixty-one million, nine hundred four thousand, forty-three".