520243510440 has 32 divisors (see below), whose sum is σ = 1560730531680. Its totient is φ = 138731602752.

The previous prime is 520243510421. The next prime is 520243510597. The reversal of 520243510440 is 44015342025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 520243510398 and 520243510407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167681174 + ... + 2167681413.

It is an arithmetic number, because the mean of its divisors is an integer number (48772829115).

Almost surely, 2^520243510440 is an apocalyptic number.

It is an amenable number.

520243510440 is an abundant number, since it is smaller than the sum of its proper divisors (1040487021240).

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

520243510440 is a wasteful number, since it uses less digits than its factorization.

520243510440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335362601 (or 4335362597 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 520243510440 its reverse (44015342025), we get a palindrome (564258852465).

The spelling of 520243510440 in words is "five hundred twenty billion, two hundred forty-three million, five hundred ten thousand, four hundred forty".