520911478248 has 128 divisors (see below), whose sum is σ = 1567456281600. Its totient is φ = 140926127616.

The previous prime is 520911478247. The next prime is 520911478249. The reversal of 520911478248 is 842874119025.

It is an interprime number because it is at equal distance from previous prime (520911478247) and next prime (520911478249).

It is a self number, because there is not a number n which added to its sum of digits gives 520911478248.

It is not an unprimeable number, because it can be changed into a prime (520911478247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6320715 + ... + 6402597.

It is an arithmetic number, because the mean of its divisors is an integer number (12245752200).

Almost surely, 2^520911478248 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 520911478248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783728140800).

520911478248 is an abundant number, since it is smaller than the sum of its proper divisors (1046544803352).

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

520911478248 is a wasteful number, since it uses less digits than its factorization.

520911478248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83911 (or 83907 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 520911478248 in words is "five hundred twenty billion, nine hundred eleven million, four hundred seventy-eight thousand, two hundred forty-eight".