505202216969 has 2 divisors, whose sum is σ = 505202216970. Its totient is φ = 505202216968.

The previous prime is 505202216957. The next prime is 505202216971. The reversal of 505202216969 is 969612202505.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450428899600 + 54773317369 = 671140^2 + 234037^2 .

It is a cyclic number.

It is not a de Polignac number, because 505202216969 - 2⁸ = 505202216713 is a prime.

It is a super-2 number, since 2×505202216969² (a number of 24 digits) contains 22 as substring.

Together with 505202216971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (505202216989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252601108484 + 252601108485.

It is an arithmetic number, because the mean of its divisors is an integer number (252601108485).

Almost surely, 2^505202216969 is an apocalyptic number.

It is an amenable number.

505202216969 is a deficient number, since it is larger than the sum of its proper divisors (1).

505202216969 is an equidigital number, since it uses as much as digits as its factorization.

505202216969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 505202216969 in words is "five hundred five billion, two hundred two million, two hundred sixteen thousand, nine hundred sixty-nine".