520123534545252 has 72 divisors (see below), whose sum is σ = 1334382680478400. Its totient is φ = 157565702669760.

The previous prime is 520123534545203. The next prime is 520123534545253. The reversal of 520123534545252 is 252545435321025.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (520123534545253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49144627 + ... + 58783002.

Almost surely, 2^{520123534545252} is an apocalyptic number.

It is an amenable number.

520123534545252 is an abundant number, since it is smaller than the sum of its proper divisors (814259145933148).

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

520123534545252 is a wasteful number, since it uses less digits than its factorization.

520123534545252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107930977 (or 107930964 counting only the distinct ones).

The product of its (nonzero) digits is 7200000, while the sum is 48.

Adding to 520123534545252 its reverse (252545435321025), we get a palindrome (772668969866277).

The spelling of 520123534545252 in words is "five hundred twenty trillion, one hundred twenty-three billion, five hundred thirty-four million, five hundred forty-five thousand, two hundred fifty-two".