520555133523123 has 12 divisors (see below), whose sum is σ = 752523785421408. Its totient is φ = 346754841169680.

The previous prime is 520555133523071. The next prime is 520555133523143. The reversal of 520555133523123 is 321325331555025.

520555133523123 is a `hidden beast` number, since 5 + 2 + 0 + 5 + 5 + 513 + 3 + 5 + 2 + 3 + 123 = 666.

It is not a de Polignac number, because 520555133523123 - 2³⁰ = 520554059781299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520555133523143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23492864340 + ... + 23492886497.

It is an arithmetic number, because the mean of its divisors is an integer number (62710315451784).

Almost surely, 2^{520555133523123} is an apocalyptic number.

520555133523123 is a deficient number, since it is larger than the sum of its proper divisors (231968651898285).

520555133523123 is a wasteful number, since it uses less digits than its factorization.

520555133523123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46985752074 (or 46985752071 counting only the distinct ones).

The product of its (nonzero) digits is 2025000, while the sum is 45.

The spelling of 520555133523123 in words is "five hundred twenty trillion, five hundred fifty-five billion, one hundred thirty-three million, five hundred twenty-three thousand, one hundred twenty-three".