6509499085 has 16 divisors (see below), whose sum is σ = 8224632000. Its totient is φ = 4932251136.

The previous prime is 6509499079. The next prime is 6509499089. The reversal of 6509499085 is 5809949056.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6509499085 - 2¹¹ = 6509497037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6509499089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550566 + ... + 562264.

It is an arithmetic number, because the mean of its divisors is an integer number (514039500).

Almost surely, 2^6509499085 is an apocalyptic number.

It is an amenable number.

6509499085 is a deficient number, since it is larger than the sum of its proper divisors (1715132915).

6509499085 is a wasteful number, since it uses less digits than its factorization.

6509499085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17580.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The square root of 6509499085 is about 80681.4668000031. The cubic root of 6509499085 is about 1867.1642497740.

The spelling of 6509499085 in words is "six billion, five hundred nine million, four hundred ninety-nine thousand, eighty-five".