434205623166209 has 2 divisors, whose sum is σ = 434205623166210. Its totient is φ = 434205623166208.

The previous prime is 434205623166181. The next prime is 434205623166251. The reversal of 434205623166209 is 902661326502434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233816118356209 + 200389504810000 = 15291047^2 + 14155900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434205623166209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (434205623766209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217102811583104 + 217102811583105.

It is an arithmetic number, because the mean of its divisors is an integer number (217102811583105).

Almost surely, 2^{434205623166209} is an apocalyptic number.

It is an amenable number.

434205623166209 is a deficient number, since it is larger than the sum of its proper divisors (1).

434205623166209 is an equidigital number, since it uses as much as digits as its factorization.

434205623166209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 434205623166209 in words is "four hundred thirty-four trillion, two hundred five billion, six hundred twenty-three million, one hundred sixty-six thousand, two hundred nine".