505423232420471 has 2 divisors, whose sum is σ = 505423232420472. Its totient is φ = 505423232420470.

The previous prime is 505423232420401. The next prime is 505423232420473. The reversal of 505423232420471 is 174024232324505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505423232420471 is a prime.

It is a super-3 number, since 3×505423232420471³ (a number of 45 digits) contains 333 as substring.

Together with 505423232420473, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505423232420473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252711616210235 + 252711616210236.

It is an arithmetic number, because the mean of its divisors is an integer number (252711616210236).

Almost surely, 2^{505423232420471} is an apocalyptic number.

505423232420471 is a deficient number, since it is larger than the sum of its proper divisors (1).

505423232420471 is an equidigital number, since it uses as much as digits as its factorization.

505423232420471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 44.

Adding to 505423232420471 its reverse (174024232324505), we get a palindrome (679447464744976).

The spelling of 505423232420471 in words is "five hundred five trillion, four hundred twenty-three billion, two hundred thirty-two million, four hundred twenty thousand, four hundred seventy-one".