230518666935517 has 2 divisors, whose sum is σ = 230518666935518. Its totient is φ = 230518666935516.

The previous prime is 230518666935511. The next prime is 230518666935607. The reversal of 230518666935517 is 715539666815032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226040580345316 + 4478086590201 = 15034646^2 + 2116149^2 .

It is a cyclic number.

It is not a de Polignac number, because 230518666935517 - 2³⁹ = 229968911121629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230518666935511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115259333467758 + 115259333467759.

It is an arithmetic number, because the mean of its divisors is an integer number (115259333467759).

Almost surely, 2^{230518666935517} is an apocalyptic number.

It is an amenable number.

230518666935517 is a deficient number, since it is larger than the sum of its proper divisors (1).

230518666935517 is an equidigital number, since it uses as much as digits as its factorization.

230518666935517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944000, while the sum is 67.

The spelling of 230518666935517 in words is "two hundred thirty trillion, five hundred eighteen billion, six hundred sixty-six million, nine hundred thirty-five thousand, five hundred seventeen".