6500015009 has 4 divisors (see below), whose sum is σ = 6582293760. Its totient is φ = 6417736260.

The previous prime is 6500014999. The next prime is 6500015069. The reversal of 6500015009 is 9005100056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6500015009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6500015069) 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 3 ways as a sum of consecutive naturals, for example, 41139257 + ... + 41139414.

It is an arithmetic number, because the mean of its divisors is an integer number (1645573440).

Almost surely, 2^6500015009 is an apocalyptic number.

It is an amenable number.

6500015009 is a deficient number, since it is larger than the sum of its proper divisors (82278751).

6500015009 is an equidigital number, since it uses as much as digits as its factorization.

6500015009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82278750.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 6500015009 is about 80622.6705647983. The cubic root of 6500015009 is about 1866.2570148501.

The spelling of 6500015009 in words is "six billion, five hundred million, fifteen thousand, nine".