520770539520 has 1664 divisors, whose sum is σ = 2352214056960. Its totient is φ = 107495424000.

The previous prime is 520770539507. The next prime is 520770539521. The reversal of 520770539520 is 25935077025.

520770539520 is a `hidden beast` number, since 5 + 2 + 0 + 7 + 70 + 53 + 9 + 520 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520770539521) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3448811445 + ... + 3448811595.

Almost surely, 2^520770539520 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 520770539520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176107028480).

520770539520 is an abundant number, since it is smaller than the sum of its proper divisors (1831443517440).

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

520770539520 is an equidigital number, since it uses as much as digits as its factorization.

520770539520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 45.

The spelling of 520770539520 in words is "five hundred twenty billion, seven hundred seventy million, five hundred thirty-nine thousand, five hundred twenty".