520540220542044 has 48 divisors (see below), whose sum is σ = 1267656115283712. Its totient is φ = 165936104835072.

The previous prime is 520540220541947. The next prime is 520540220542061. The reversal of 520540220542044 is 440245022045025.

It is a junction number, because it is equal to n+sod(n) for n = 520540220541993 and 520540220542011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187487874 + ... + 190244009.

It is an arithmetic number, because the mean of its divisors is an integer number (26409502401744).

Almost surely, 2^{520540220542044} is an apocalyptic number.

It is an amenable number.

520540220542044 is an abundant number, since it is smaller than the sum of its proper divisors (747115894741668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520540220542044 is a wasteful number, since it uses less digits than its factorization.

520540220542044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377736906 (or 377736904 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 39.

Adding to 520540220542044 its reverse (440245022045025), we get a palindrome (960785242587069).

The spelling of 520540220542044 in words is "five hundred twenty trillion, five hundred forty billion, two hundred twenty million, five hundred forty-two thousand, forty-four".