6501011565 has 64 divisors (see below), whose sum is σ = 11290254336. Its totient is φ = 3181780992.

The previous prime is 6501011563. The next prime is 6501011597. The reversal of 6501011565 is 5651101056.

It is not a de Polignac number, because 6501011565 - 2¹ = 6501011563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501011563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3750439 + ... + 3752171.

It is an arithmetic number, because the mean of its divisors is an integer number (176410224).

Almost surely, 2^6501011565 is an apocalyptic number.

It is an amenable number.

6501011565 is a deficient number, since it is larger than the sum of its proper divisors (4789242771).

6501011565 is a wasteful number, since it uses less digits than its factorization.

6501011565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 6501011565 is about 80628.8506987418. The cubic root of 6501011565 is about 1866.3523856343.

The spelling of 6501011565 in words is "six billion, five hundred one million, eleven thousand, five hundred sixty-five".