505275881632217 has 4 divisors (see below), whose sum is σ = 505275952717236. Its totient is φ = 505275810547200.

The previous prime is 505275881632183. The next prime is 505275881632219. The reversal of 505275881632217 is 712236188572505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122292390670921 + 382983490961296 = 11058589^2 + 19569964^2 .

It is a cyclic number.

It is not a de Polignac number, because 505275881632217 - 2²² = 505275877437913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505275881632217.

It is not an unprimeable number, because it can be changed into a prime (505275881632219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23526284 + ... + 39547917.

It is an arithmetic number, because the mean of its divisors is an integer number (126318988179309).

Almost surely, 2^{505275881632217} is an apocalyptic number.

It is an amenable number.

505275881632217 is a deficient number, since it is larger than the sum of its proper divisors (71085019).

505275881632217 is an equidigital number, since it uses as much as digits as its factorization.

505275881632217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71085018.

The product of its (nonzero) digits is 56448000, while the sum is 62.

The spelling of 505275881632217 in words is "five hundred five trillion, two hundred seventy-five billion, eight hundred eighty-one million, six hundred thirty-two thousand, two hundred seventeen".