6565312140 has 48 divisors (see below), whose sum is σ = 18386403840. Its totient is φ = 1750413760.

The previous prime is 6565312133. The next prime is 6565312157. The reversal of 6565312140 is 412135656.

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, 566605 + ... + 578075.

It is an arithmetic number, because the mean of its divisors is an integer number (383050080).

Almost surely, 2^6565312140 is an apocalyptic number.

6565312140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6565312140 is an abundant number, since it is smaller than the sum of its proper divisors (11821091700).

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

6565312140 is a wasteful number, since it uses less digits than its factorization.

6565312140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022 (or 21020 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 6565312140 is about 81026.6137759687. The cubic root of 6565312140 is about 1872.4854841082.

Adding to 6565312140 its reverse (412135656), we get a palindrome (6977447796).

The spelling of 6565312140 in words is "six billion, five hundred sixty-five million, three hundred twelve thousand, one hundred forty".