520855268608 has 72 divisors (see below), whose sum is σ = 1051962162048. Its totient is φ = 257368184832.

The previous prime is 520855268603. The next prime is 520855268639. The reversal of 520855268608 is 806862558025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520855268603) 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, 7360885 + ... + 7431307.

It is an arithmetic number, because the mean of its divisors is an integer number (14610585584).

Almost surely, 2^520855268608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520855268608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525981081024).

520855268608 is an abundant number, since it is smaller than the sum of its proper divisors (531106893440).

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

520855268608 is a wasteful number, since it uses less digits than its factorization.

520855268608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70779 (or 70765 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 55.

The spelling of 520855268608 in words is "five hundred twenty billion, eight hundred fifty-five million, two hundred sixty-eight thousand, six hundred eight".