243104099729 has 2 divisors, whose sum is σ = 243104099730. Its totient is φ = 243104099728.

The previous prime is 243104099717. The next prime is 243104099747. The reversal of 243104099729 is 927990401342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238715302225 + 4388797504 = 488585^2 + 66248^2 .

It is a cyclic number.

It is not a de Polignac number, because 243104099729 - 2¹⁶ = 243104034193 is a prime.

It is not a weakly prime, because it can be changed into another prime (243104099779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121552049864 + 121552049865.

It is an arithmetic number, because the mean of its divisors is an integer number (121552049865).

Almost surely, 2^243104099729 is an apocalyptic number.

It is an amenable number.

243104099729 is a deficient number, since it is larger than the sum of its proper divisors (1).

243104099729 is an equidigital number, since it uses as much as digits as its factorization.

243104099729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 243104099729 in words is "two hundred forty-three billion, one hundred four million, ninety-nine thousand, seven hundred twenty-nine".