6512117728 has 36 divisors (see below), whose sum is σ = 13008989448. Its totient is φ = 3208302720.

The previous prime is 6512117701. The next prime is 6512117761. The reversal of 6512117728 is 8277112156.

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 5 ways as a sum of consecutive naturals, for example, 3845650 + ... + 3847342.

It is an arithmetic number, because the mean of its divisors is an integer number (361360818).

Almost surely, 2^6512117728 is an apocalyptic number.

It is an amenable number.

6512117728 is a deficient number, since it is larger than the sum of its proper divisors (6496871720).

6512117728 is an frugal number, since it uses more digits than its factorization.

6512117728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467 (or 1766 counting only the distinct ones).

The product of its digits is 47040, while the sum is 40.

The square root of 6512117728 is about 80697.6934490695. The cubic root of 6512117728 is about 1867.4145906494.

The spelling of 6512117728 in words is "six billion, five hundred twelve million, one hundred seventeen thousand, seven hundred twenty-eight".