6565532140 has 24 divisors (see below), whose sum is σ = 14263053840. Its totient is φ = 2535653568.

The previous prime is 6565532117. The next prime is 6565532143. The reversal of 6565532140 is 412355656.

It is a self number, because there is not a number n which added to its sum of digits gives 6565532140.

It is not an unprimeable number, because it can be changed into a prime (6565532143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5659362 + ... + 5660521.

It is an arithmetic number, because the mean of its divisors is an integer number (594293910).

Almost surely, 2^6565532140 is an apocalyptic number.

It is an amenable number.

6565532140 is an abundant number, since it is smaller than the sum of its proper divisors (7697521700).

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

6565532140 is a wasteful number, since it uses less digits than its factorization.

6565532140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11319921 (or 11319919 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 6565532140 is about 81027.9713432343. The cubic root of 6565532140 is about 1872.5063991943.

Adding to 6565532140 its reverse (412355656), we get a palindrome (6977887796).

The spelling of 6565532140 in words is "six billion, five hundred sixty-five million, five hundred thirty-two thousand, one hundred forty".