6468379816 has 32 divisors (see below), whose sum is σ = 12263328000. Its totient is φ = 3198214656.

The previous prime is 6468379783. The next prime is 6468379847. The reversal of 6468379816 is 6189738646.

It is a happy number.

It is an unprimeable number.

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, 1222665 + ... + 1227943.

It is an arithmetic number, because the mean of its divisors is an integer number (383229000).

Almost surely, 2^6468379816 is an apocalyptic number.

It is an amenable number.

6468379816 is a deficient number, since it is larger than the sum of its proper divisors (5794948184).

6468379816 is a wasteful number, since it uses less digits than its factorization.

6468379816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6961 (or 6957 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 58.

The square root of 6468379816 is about 80426.2383554024. The cubic root of 6468379816 is about 1863.2244351290.

The spelling of 6468379816 in words is "six billion, four hundred sixty-eight million, three hundred seventy-nine thousand, eight hundred sixteen".