520536804845 has 8 divisors (see below), whose sum is σ = 628254826776. Its totient is φ = 414022336576.

The previous prime is 520536804719. The next prime is 520536804889. The reversal of 520536804845 is 548408635025.

It can be written as a sum of positive squares in 4 ways, for example, as 94527347209 + 426009457636 = 307453^2 + 652694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520536804845 - 2⁸ = 520536804589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520536804793 and 520536804802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300887462 + ... + 300889191.

It is an arithmetic number, because the mean of its divisors is an integer number (78531853347).

Almost surely, 2^520536804845 is an apocalyptic number.

It is an amenable number.

520536804845 is a deficient number, since it is larger than the sum of its proper divisors (107718021931).

520536804845 is a wasteful number, since it uses less digits than its factorization.

520536804845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601776831.

The product of its (nonzero) digits is 4608000, while the sum is 50.

The spelling of 520536804845 in words is "five hundred twenty billion, five hundred thirty-six million, eight hundred four thousand, eight hundred forty-five".