520381323528 has 512 divisors, whose sum is σ = 1588543488000. Its totient is φ = 140209090560.

The previous prime is 520381323487. The next prime is 520381323529. The reversal of 520381323528 is 825323183025.

It is a self number, because there is not a number n which added to its sum of digits gives 520381323528.

It is not an unprimeable number, because it can be changed into a prime (520381323529) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2333548425 + ... + 2333548647.

It is an arithmetic number, because the mean of its divisors is an integer number (3102624000).

Almost surely, 2^520381323528 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 520381323528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794271744000).

520381323528 is an abundant number, since it is smaller than the sum of its proper divisors (1068162164472).

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

520381323528 is a wasteful number, since it uses less digits than its factorization.

520381323528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 520381323528 in words is "five hundred twenty billion, three hundred eighty-one million, three hundred twenty-three thousand, five hundred twenty-eight".