520734117132217 has 4 divisors (see below), whose sum is σ = 520747680427380. Its totient is φ = 520720553837056.

The previous prime is 520734117132209. The next prime is 520734117132233. The reversal of 520734117132217 is 712231711437025.

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 128230620618816 + 392503496513401 = 11323896^2 + 19811701^2 .

It is a cyclic number.

It is not a de Polignac number, because 520734117132217 - 2³ = 520734117132209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520734117132017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6781589992 + ... + 6781666777.

It is an arithmetic number, because the mean of its divisors is an integer number (130186920106845).

Almost surely, 2^{520734117132217} is an apocalyptic number.

It is an amenable number.

520734117132217 is a deficient number, since it is larger than the sum of its proper divisors (13563295163).

520734117132217 is a wasteful number, since it uses less digits than its factorization.

520734117132217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13563295162.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 520734117132217 in words is "five hundred twenty trillion, seven hundred thirty-four billion, one hundred seventeen million, one hundred thirty-two thousand, two hundred seventeen".