6565211240 has 32 divisors (see below), whose sum is σ = 16881972480. Its totient is φ = 2250929472.

The previous prime is 6565211231. The next prime is 6565211251. The reversal of 6565211240 is 421125656.

It is a junction number, because it is equal to n+sod(n) for n = 6565211197 and 6565211206.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11723312 + ... + 11723871.

It is an arithmetic number, because the mean of its divisors is an integer number (527561640).

Almost surely, 2^6565211240 is an apocalyptic number.

It is an amenable number.

6565211240 is an abundant number, since it is smaller than the sum of its proper divisors (10316761240).

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

6565211240 is a wasteful number, since it uses less digits than its factorization.

6565211240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23447201 (or 23447197 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 6565211240 is about 81025.9911386464. The cubic root of 6565211240 is about 1872.4758915329.

Adding to 6565211240 its reverse (421125656), we get a palindrome (6986336896).

The spelling of 6565211240 in words is "six billion, five hundred sixty-five million, two hundred eleven thousand, two hundred forty".