520930851668 has 24 divisors (see below), whose sum is σ = 917787024000. Its totient is φ = 258710405408.

The previous prime is 520930851653. The next prime is 520930851739. The reversal of 520930851668 is 866158039025.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 79808 + ... + 1023831.

It is an arithmetic number, because the mean of its divisors is an integer number (38241126000).

Almost surely, 2^520930851668 is an apocalyptic number.

It is an amenable number.

520930851668 is a deficient number, since it is larger than the sum of its proper divisors (396856172332).

520930851668 is a wasteful number, since it uses less digits than its factorization.

520930851668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104439 (or 1104437 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 520930851668 in words is "five hundred twenty billion, nine hundred thirty million, eight hundred fifty-one thousand, six hundred sixty-eight".