520641213255 has 24 divisors (see below), whose sum is σ = 905876139168. Its totient is φ = 276619507776.

The previous prime is 520641213229. The next prime is 520641213343. The reversal of 520641213255 is 552312146025.

520641213255 is a `hidden beast` number, since 5 + 2 + 0 + 641 + 2 + 1 + 3 + 2 + 5 + 5 = 666.

520641213255 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 520641213255 - 2¹⁵ = 520641180487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21983992 + ... + 22007661.

It is an arithmetic number, because the mean of its divisors is an integer number (37744839132).

Almost surely, 2^520641213255 is an apocalyptic number.

520641213255 is a deficient number, since it is larger than the sum of its proper divisors (385234925913).

520641213255 is a wasteful number, since it uses less digits than its factorization.

520641213255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43991927 (or 43991924 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 520641213255 in words is "five hundred twenty billion, six hundred forty-one million, two hundred thirteen thousand, two hundred fifty-five".