6565020000 has 960 divisors, whose sum is σ = 28340928000. Its totient is φ = 1317120000.

The previous prime is 6565019983. The next prime is 6565020031. The reversal of 6565020000 is 205656.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 226379986 + ... + 226380014.

It is an arithmetic number, because the mean of its divisors is an integer number (29521800).

Almost surely, 2^6565020000 is an apocalyptic number.

6565020000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6565020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14170464000).

6565020000 is an abundant number, since it is smaller than the sum of its proper divisors (21775908000).

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

6565020000 is a wasteful number, since it uses less digits than its factorization.

6565020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 6565020000 is about 81024.8110148984. The cubic root of 6565020000 is about 1872.4577100531.

Adding to 6565020000 its reverse (205656), we get a palindrome (6565225656).

The spelling of 6565020000 in words is "six billion, five hundred sixty-five million, twenty thousand".