6565406848 has 128 divisors (see below), whose sum is σ = 17561658240. Its totient is φ = 2361139200.

The previous prime is 6565406843. The next prime is 6565406893. The reversal of 6565406848 is 8486045656.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 6565406795 and 6565406804.

It is not an unprimeable number, because it can be changed into a prime (6565406843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102508 + ... + 153748.

It is an arithmetic number, because the mean of its divisors is an integer number (137200455).

Almost surely, 2^6565406848 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 6565406848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8780829120).

6565406848 is an abundant number, since it is smaller than the sum of its proper divisors (10996251392).

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

6565406848 is a wasteful number, since it uses less digits than its factorization.

6565406848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51286 (or 51274 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 52.

The square root of 6565406848 is about 81027.1981991232. The cubic root of 6565406848 is about 1872.4944879199.

The spelling of 6565406848 in words is "six billion, five hundred sixty-five million, four hundred six thousand, eight hundred forty-eight".