520522665640422 has 64 divisors (see below), whose sum is σ = 1065194337300480. Its totient is φ = 169510631472000.

The previous prime is 520522665640421. The next prime is 520522665640493. The reversal of 520522665640422 is 224046566225025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520522665640421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1224255672 + ... + 1224680772.

It is an arithmetic number, because the mean of its divisors is an integer number (16643661520320).

Almost surely, 2^{520522665640422} is an apocalyptic number.

520522665640422 is an abundant number, since it is smaller than the sum of its proper divisors (544671671660058).

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

520522665640422 is a wasteful number, since it uses less digits than its factorization.

520522665640422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441509.

The product of its (nonzero) digits is 13824000, while the sum is 51.

The spelling of 520522665640422 in words is "five hundred twenty trillion, five hundred twenty-two billion, six hundred sixty-five million, six hundred forty thousand, four hundred twenty-two".