520127697856 has 56 divisors (see below), whose sum is σ = 1128112907600. Its totient is φ = 236475942912.

The previous prime is 520127697809. The next prime is 520127697877. The reversal of 520127697856 is 658796721025.

It is a self number, because there is not a number n which added to its sum of digits gives 520127697856.

It is a congruent number.

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, 4609581 + ... + 4721068.

It is an arithmetic number, because the mean of its divisors is an integer number (20144873350).

Almost surely, 2^520127697856 is an apocalyptic number.

It is an amenable number.

520127697856 is an abundant number, since it is smaller than the sum of its proper divisors (607985209744).

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

520127697856 is a wasteful number, since it uses less digits than its factorization.

520127697856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9330741 (or 9330731 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 520127697856 in words is "five hundred twenty billion, one hundred twenty-seven million, six hundred ninety-seven thousand, eight hundred fifty-six".