520666025880 has 512 divisors, whose sum is σ = 2117639946240. Its totient is φ = 98896066560.

The previous prime is 520666025857. The next prime is 520666025903. The reversal of 520666025880 is 88520666025.

520666025880 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (520666025857) and next prime (520666025903).

It is a super-2 number, since 2×520666025880² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12351319 + ... + 12393401.

It is an arithmetic number, because the mean of its divisors is an integer number (4136015520).

Almost surely, 2^520666025880 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 520666025880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058819973120).

520666025880 is an abundant number, since it is smaller than the sum of its proper divisors (1596973920360).

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

520666025880 is a wasteful number, since it uses less digits than its factorization.

520666025880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42231 (or 42227 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 520666025880 in words is "five hundred twenty billion, six hundred sixty-six million, twenty-five thousand, eight hundred eighty".