520842168520 has 32 divisors (see below), whose sum is σ = 1173851352000. Its totient is φ = 207989050048.

The previous prime is 520842168493. The next prime is 520842168541. The reversal of 520842168520 is 25861248025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10845034 + ... + 10892953.

It is an arithmetic number, because the mean of its divisors is an integer number (36682854750).

Almost surely, 2^520842168520 is an apocalyptic number.

It is an amenable number.

520842168520 is an abundant number, since it is smaller than the sum of its proper divisors (653009183480).

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

520842168520 is a wasteful number, since it uses less digits than its factorization.

520842168520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21738597 (or 21738593 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 43.

The spelling of 520842168520 in words is "five hundred twenty billion, eight hundred forty-two million, one hundred sixty-eight thousand, five hundred twenty".