505404343354459 has 2 divisors, whose sum is σ = 505404343354460. Its totient is φ = 505404343354458.

The previous prime is 505404343354403. The next prime is 505404343354501. The reversal of 505404343354459 is 954453343404505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505404343354459 - 2¹¹ = 505404343352411 is a prime.

It is not a weakly prime, because it can be changed into another prime (505404383354459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252702171677229 + 252702171677230.

It is an arithmetic number, because the mean of its divisors is an integer number (252702171677230).

Almost surely, 2^{505404343354459} is an apocalyptic number.

505404343354459 is a deficient number, since it is larger than the sum of its proper divisors (1).

505404343354459 is an equidigital number, since it uses as much as digits as its factorization.

505404343354459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520000, while the sum is 58.

The spelling of 505404343354459 in words is "five hundred five trillion, four hundred four billion, three hundred forty-three million, three hundred fifty-four thousand, four hundred fifty-nine".