6928128964 has 12 divisors (see below), whose sum is σ = 12241937344. Its totient is φ = 3430432584.

The previous prime is 6928128959. The next prime is 6928129001. The reversal of 6928128964 is 4698218296.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8407512 + ... + 8408335.

Almost surely, 2^6928128964 is an apocalyptic number.

It is an amenable number.

6928128964 is a deficient number, since it is larger than the sum of its proper divisors (5313808380).

6928128964 is a wasteful number, since it uses less digits than its factorization.

6928128964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16815954 (or 16815952 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 55.

The square root of 6928128964 is about 83235.3828849246. The cubic root of 6928128964 is about 1906.3617742518.

The spelling of 6928128964 in words is "six billion, nine hundred twenty-eight million, one hundred twenty-eight thousand, nine hundred sixty-four".