520838544697 has 4 divisors (see below), whose sum is σ = 520895845456. Its totient is φ = 520781243940.

The previous prime is 520838544689. The next prime is 520838544703. The reversal of 520838544697 is 796445838025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 520838544697 - 2³ = 520838544689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520838544647) 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, 28636743 + ... + 28654924.

It is an arithmetic number, because the mean of its divisors is an integer number (130223961364).

Almost surely, 2^520838544697 is an apocalyptic number.

It is an amenable number.

520838544697 is a deficient number, since it is larger than the sum of its proper divisors (57300759).

520838544697 is an equidigital number, since it uses as much as digits as its factorization.

520838544697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57300758.

The product of its (nonzero) digits is 58060800, while the sum is 61.

The spelling of 520838544697 in words is "five hundred twenty billion, eight hundred thirty-eight million, five hundred forty-four thousand, six hundred ninety-seven".