6512564771 has 8 divisors (see below), whose sum is σ = 6806593920. Its totient is φ = 6223166208.

The previous prime is 6512564749. The next prime is 6512564813. The reversal of 6512564771 is 1774652156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6512564771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6512564711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154771 + ... + 1160396.

It is an arithmetic number, because the mean of its divisors is an integer number (850824240).

Almost surely, 2^6512564771 is an apocalyptic number.

6512564771 is a deficient number, since it is larger than the sum of its proper divisors (294029149).

6512564771 is a wasteful number, since it uses less digits than its factorization.

6512564771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315293.

The product of its digits is 352800, while the sum is 44.

The square root of 6512564771 is about 80700.4632638500. The cubic root of 6512564771 is about 1867.4573210153.

The spelling of 6512564771 in words is "six billion, five hundred twelve million, five hundred sixty-four thousand, seven hundred seventy-one".