520471911960 has 1344 divisors, whose sum is σ = 2376748261440. Its totient is φ = 99769190400.

The previous prime is 520471911959. The next prime is 520471912003. The reversal of 520471911960 is 69119174025.

520471911960 is a `hidden beast` number, since 5 + 2 + 0 + 471 + 9 + 119 + 60 = 666.

It is a super-2 number, since 2×520471911960² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 321079950 + ... + 321081570.

It is an arithmetic number, because the mean of its divisors is an integer number (1768413885).

Almost surely, 2^520471911960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520471911960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188374130720).

520471911960 is an abundant number, since it is smaller than the sum of its proper divisors (1856276349480).

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

520471911960 is a wasteful number, since it uses less digits than its factorization.

520471911960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 520471911960 in words is "five hundred twenty billion, four hundred seventy-one million, nine hundred eleven thousand, nine hundred sixty".