6503311065 has 16 divisors (see below), whose sum is σ = 10857702528. Its totient is φ = 3317630976.

The previous prime is 6503311039. The next prime is 6503311081. The reversal of 6503311065 is 5601133056.

6503311065 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6503311065 - 2⁵ = 6503311033 is a prime.

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, 9424744 + ... + 9425433.

It is an arithmetic number, because the mean of its divisors is an integer number (678606408).

Almost surely, 2^6503311065 is an apocalyptic number.

It is an amenable number.

6503311065 is a deficient number, since it is larger than the sum of its proper divisors (4354391463).

6503311065 is a wasteful number, since it uses less digits than its factorization.

6503311065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18850208.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 6503311065 is about 80643.1092220532. The cubic root of 6503311065 is about 1866.5724114646.

The spelling of 6503311065 in words is "six billion, five hundred three million, three hundred eleven thousand, sixty-five".