505223566417 has 2 divisors, whose sum is σ = 505223566418. Its totient is φ = 505223566416.

The previous prime is 505223566403. The next prime is 505223566427. The reversal of 505223566417 is 714665322505.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502863938641 + 2359627776 = 709129^2 + 48576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505223566417 is a prime.

It is a super-2 number, since 2×505223566417² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (505223566427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252611783208 + 252611783209.

It is an arithmetic number, because the mean of its divisors is an integer number (252611783209).

Almost surely, 2^505223566417 is an apocalyptic number.

It is an amenable number.

505223566417 is a deficient number, since it is larger than the sum of its proper divisors (1).

505223566417 is an equidigital number, since it uses as much as digits as its factorization.

505223566417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 505223566417 in words is "five hundred five billion, two hundred twenty-three million, five hundred sixty-six thousand, four hundred seventeen".