520504076871 has 8 divisors (see below), whose sum is σ = 771117150960. Its totient is φ = 347002717896.

The previous prime is 520504076849. The next prime is 520504076887. The reversal of 520504076871 is 178670405025.

520504076871 is a `hidden beast` number, since 5 + 2 + 0 + 504 + 0 + 76 + 8 + 71 = 666.

It is not a de Polignac number, because 520504076871 - 2¹⁵ = 520504044103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520504076801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9638964360 + ... + 9638964413.

It is an arithmetic number, because the mean of its divisors is an integer number (96389643870).

Almost surely, 2^520504076871 is an apocalyptic number.

520504076871 is a deficient number, since it is larger than the sum of its proper divisors (250613074089).

520504076871 is a wasteful number, since it uses less digits than its factorization.

520504076871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19277928782 (or 19277928776 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 520504076871 in words is "five hundred twenty billion, five hundred four million, seventy-six thousand, eight hundred seventy-one".