520878364776 has 640 divisors, whose sum is σ = 1886810112000. Its totient is φ = 130288435200.

The previous prime is 520878364751. The next prime is 520878364777. The reversal of 520878364776 is 677463878025.

520878364776 is a `hidden beast` number, since 5 + 2 + 0 + 87 + 83 + 6 + 477 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (520878364777) by changing a digit.

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 159 ways as a sum of consecutive naturals, for example, 369678760 + ... + 369680168.

It is an arithmetic number, because the mean of its divisors is an integer number (2948140800).

Almost surely, 2^520878364776 is an apocalyptic number.

520878364776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520878364776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943405056000).

520878364776 is an abundant number, since it is smaller than the sum of its proper divisors (1365931747224).

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

520878364776 is a wasteful number, since it uses less digits than its factorization.

520878364776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 63.

The spelling of 520878364776 in words is "five hundred twenty billion, eight hundred seventy-eight million, three hundred sixty-four thousand, seven hundred seventy-six".