520351452544 has 256 divisors, whose sum is σ = 1341449164800. Its totient is φ = 195092029440.

The previous prime is 520351452521. The next prime is 520351452581. The reversal of 520351452544 is 445254153025.

It is a junction number, because it is equal to n+sod(n) for n = 520351452497 and 520351452506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90603337 + ... + 90609079.

It is an arithmetic number, because the mean of its divisors is an integer number (5240035800).

Almost surely, 2^520351452544 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 520351452544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (670724582400).

520351452544 is an abundant number, since it is smaller than the sum of its proper divisors (821097712256).

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

520351452544 is a wasteful number, since it uses less digits than its factorization.

520351452544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121 (or 6109 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 520351452544 in words is "five hundred twenty billion, three hundred fifty-one million, four hundred fifty-two thousand, five hundred forty-four".