6640038048 has 48 divisors (see below), whose sum is σ = 19920116160. Its totient is φ = 1897153536.

The previous prime is 6640038029. The next prime is 6640038089. The reversal of 6640038048 is 8408300466.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 6640037997 and 6640038015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4939833 + ... + 4941176.

It is an arithmetic number, because the mean of its divisors is an integer number (415002420).

Almost surely, 2^6640038048 is an apocalyptic number.

It is an amenable number.

6640038048 is an abundant number, since it is smaller than the sum of its proper divisors (13280078112).

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

6640038048 is a wasteful number, since it uses less digits than its factorization.

6640038048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9881029 (or 9881021 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 6640038048 is about 81486.4286123769. The cubic root of 6640038048 is about 1879.5628650174.

The spelling of 6640038048 in words is "six billion, six hundred forty million, thirty-eight thousand, forty-eight".