243104534917 has 2 divisors, whose sum is σ = 243104534918. Its totient is φ = 243104534916.

The previous prime is 243104534873. The next prime is 243104534921. The reversal of 243104534917 is 719435401342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241538829156 + 1565705761 = 491466^2 + 39569^2 .

It is a cyclic number.

It is not a de Polignac number, because 243104534917 - 2⁷ = 243104534789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243104534927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121552267458 + 121552267459.

It is an arithmetic number, because the mean of its divisors is an integer number (121552267459).

Almost surely, 2^243104534917 is an apocalyptic number.

It is an amenable number.

243104534917 is a deficient number, since it is larger than the sum of its proper divisors (1).

243104534917 is an equidigital number, since it uses as much as digits as its factorization.

243104534917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 243104534917 in words is "two hundred forty-three billion, one hundred four million, five hundred thirty-four thousand, nine hundred seventeen".