6520505360 has 80 divisors (see below), whose sum is σ = 15449011200. Its totient is φ = 2558696448.

The previous prime is 6520505351. The next prime is 6520505389. The reversal of 6520505360 is 635050256.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2911121 + ... + 2913359.

It is an arithmetic number, because the mean of its divisors is an integer number (193112640).

Almost surely, 2^6520505360 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 6520505360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7724505600).

6520505360 is an abundant number, since it is smaller than the sum of its proper divisors (8928505840).

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

6520505360 is a wasteful number, since it uses less digits than its factorization.

6520505360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 6520505360 is about 80749.6461911754. The cubic root of 6520505360 is about 1868.2159923384.

The spelling of 6520505360 in words is "six billion, five hundred twenty million, five hundred five thousand, three hundred sixty".