520256055434220 has 576 divisors, whose sum is σ = 1952161389674496. Its totient is φ = 113716919796480.

The previous prime is 520256055434147. The next prime is 520256055434249. The reversal of 520256055434220 is 22434550652025.

It is a happy number.

520256055434220 is a `hidden beast` number, since 5 + 2 + 0 + 2 + 5 + 60 + 5 + 543 + 42 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3200962597 + ... + 3201125123.

It is an arithmetic number, because the mean of its divisors is an integer number (3389169079296).

Almost surely, 2^{520256055434220} 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 520256055434220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976080694837248).

520256055434220 is an abundant number, since it is smaller than the sum of its proper divisors (1431905334240276).

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

520256055434220 is a wasteful number, since it uses less digits than its factorization.

520256055434220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166672 (or 166658 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 45.

The spelling of 520256055434220 in words is "five hundred twenty trillion, two hundred fifty-six billion, fifty-five million, four hundred thirty-four thousand, two hundred twenty".