520245430020 has 96 divisors (see below), whose sum is σ = 1620426998400. Its totient is φ = 138570486912.

The previous prime is 520245429973. The next prime is 520245430031. The reversal of 520245430020 is 20034542025.

It is a happy number.

520245430020 is a `hidden beast` number, since 5 + 202 + 4 + 5 + 430 + 0 + 20 = 666.

It is a super-3 number, since 3×520245430020³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 96919 + ... + 1024638.

It is an arithmetic number, because the mean of its divisors is an integer number (16879447900).

Almost surely, 2^520245430020 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 520245430020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810213499200).

520245430020 is an abundant number, since it is smaller than the sum of its proper divisors (1100181568380).

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

520245430020 is a wasteful number, since it uses less digits than its factorization.

520245430020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122434 (or 1122426 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

Adding to 520245430020 its reverse (20034542025), we get a palindrome (540279972045).

The spelling of 520245430020 in words is "five hundred twenty billion, two hundred forty-five million, four hundred thirty thousand, twenty".