504745138217 has 4 divisors (see below), whose sum is σ = 504750836436. Its totient is φ = 504739440000.

The previous prime is 504745138213. The next prime is 504745138283. The reversal of 504745138217 is 712831547405.

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 490575568921 + 14169569296 = 700411^2 + 119036^2 .

It is a cyclic number.

It is not a de Polignac number, because 504745138217 - 2² = 504745138213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504745138213) 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, 2714108 + ... + 2894109.

It is an arithmetic number, because the mean of its divisors is an integer number (126187709109).

Almost surely, 2^504745138217 is an apocalyptic number.

It is an amenable number.

504745138217 is a deficient number, since it is larger than the sum of its proper divisors (5698219).

504745138217 is an equidigital number, since it uses as much as digits as its factorization.

504745138217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698218.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 504745138217 in words is "five hundred four billion, seven hundred forty-five million, one hundred thirty-eight thousand, two hundred seventeen".