6516005988 has 24 divisors (see below), whose sum is σ = 15412290208. Its totient is φ = 2142248256.

The previous prime is 6516005987. The next prime is 6516006017. The reversal of 6516005988 is 8895006156.

It is a super-2 number, since 2×6516005988² = 84916668071303712288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6516005981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3718306 + ... + 3720057.

Almost surely, 2^6516005988 is an apocalyptic number.

It is an amenable number.

6516005988 is an abundant number, since it is smaller than the sum of its proper divisors (8896284220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6516005988 is a wasteful number, since it uses less digits than its factorization.

6516005988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7438443 (or 7438441 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 6516005988 is about 80721.7813728116. The cubic root of 6516005988 is about 1867.7861824575.

The spelling of 6516005988 in words is "six billion, five hundred sixteen million, five thousand, nine hundred eighty-eight".