6516999999 has 12 divisors (see below), whose sum is σ = 9510491536. Its totient is φ = 4299875712.

The previous prime is 6516999989. The next prime is 6517000001. The reversal of 6516999999 is 9999996156.

It is not a de Polignac number, because 6516999999 - 2⁵ = 6516999967 is a prime.

It is a Duffinian number.

6516999999 is a modest number, since divided by 99999 gives 65169 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516999989) 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 11 ways as a sum of consecutive naturals, for example, 3731659 + ... + 3733404.

Almost surely, 2^6516999999 is an apocalyptic number.

6516999999 is a deficient number, since it is larger than the sum of its proper divisors (2993491537).

6516999999 is a wasteful number, since it uses less digits than its factorization.

6516999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465166 (or 7465163 counting only the distinct ones).

The product of its digits is 95659380, while the sum is 72.

The square root of 6516999999 is about 80727.9381565019. The cubic root of 6516999999 is about 1867.8811540098.

The spelling of 6516999999 in words is "six billion, five hundred sixteen million, nine hundred ninety-nine thousand, nine hundred ninety-nine".