520223375240 has 32 divisors (see below), whose sum is σ = 1171231116480. Its totient is φ = 207959835072.

The previous prime is 520223375227. The next prime is 520223375261. The reversal of 520223375240 is 42573322025.

It is a self number, because there is not a number n which added to its sum of digits gives 520223375240.

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, 3982262 + ... + 4110821.

It is an arithmetic number, because the mean of its divisors is an integer number (36600972390).

Almost surely, 2^520223375240 is an apocalyptic number.

It is an amenable number.

520223375240 is an abundant number, since it is smaller than the sum of its proper divisors (651007741240).

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

520223375240 is a wasteful number, since it uses less digits than its factorization.

520223375240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8094701 (or 8094697 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 35.

Adding to 520223375240 its reverse (42573322025), we get a palindrome (562796697265).

The spelling of 520223375240 in words is "five hundred twenty billion, two hundred twenty-three million, three hundred seventy-five thousand, two hundred forty".