6501270865 has 32 divisors (see below), whose sum is σ = 8188240896. Its totient is φ = 4949268480.

The previous prime is 6501270773. The next prime is 6501270913. The reversal of 6501270865 is 5680721056.

It is not a de Polignac number, because 6501270865 - 2⁹ = 6501270353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5011897 + ... + 5013193.

It is an arithmetic number, because the mean of its divisors is an integer number (255882528).

Almost surely, 2^6501270865 is an apocalyptic number.

It is an amenable number.

6501270865 is a deficient number, since it is larger than the sum of its proper divisors (1686970031).

6501270865 is a wasteful number, since it uses less digits than its factorization.

6501270865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 6501270865 is about 80630.4586679252. The cubic root of 6501270865 is about 1866.3771991439.

The spelling of 6501270865 in words is "six billion, five hundred one million, two hundred seventy thousand, eight hundred sixty-five".