520930851671 has 4 divisors (see below), whose sum is σ = 529760188200. Its totient is φ = 512101515144.

The previous prime is 520930851653. The next prime is 520930851739. The reversal of 520930851671 is 176158039025.

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

It is a cyclic number.

It is not a de Polignac number, because 520930851671 - 2¹⁸ = 520930589527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520930851611) 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, 4414668176 + ... + 4414668293.

It is an arithmetic number, because the mean of its divisors is an integer number (132440047050).

Almost surely, 2^520930851671 is an apocalyptic number.

520930851671 is a deficient number, since it is larger than the sum of its proper divisors (8829336529).

520930851671 is an equidigital number, since it uses as much as digits as its factorization.

520930851671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8829336528.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 520930851671 in words is "five hundred twenty billion, nine hundred thirty million, eight hundred fifty-one thousand, six hundred seventy-one".