6512561368 has 16 divisors (see below), whose sum is σ = 12211920000. Its totient is φ = 3256049376.

The previous prime is 6512561351. The next prime is 6512561381. The reversal of 6512561368 is 8631652156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177033 + ... + 210631.

It is an arithmetic number, because the mean of its divisors is an integer number (763245000).

Almost surely, 2^6512561368 is an apocalyptic number.

It is an amenable number.

6512561368 is a deficient number, since it is larger than the sum of its proper divisors (5699358632).

6512561368 is a wasteful number, since it uses less digits than its factorization.

6512561368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57834 (or 57830 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 6512561368 is about 80700.4421797056. The cubic root of 6512561368 is about 1867.4569957487.

The spelling of 6512561368 in words is "six billion, five hundred twelve million, five hundred sixty-one thousand, three hundred sixty-eight".