6418320256018 has 96 divisors (see below), whose sum is σ = 11245471030080. Its totient is φ = 2735844249600.

The previous prime is 6418320256003. The next prime is 6418320256027. The reversal of 6418320256018 is 8106520238146.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2823720930 + ... + 2823723202.

It is an arithmetic number, because the mean of its divisors is an integer number (117140323230).

Almost surely, 2^{6418320256018} is an apocalyptic number.

6418320256018 is a deficient number, since it is larger than the sum of its proper divisors (4827150774062).

6418320256018 is a wasteful number, since it uses less digits than its factorization.

6418320256018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504 (or 4493 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 6418320256018 in words is "six trillion, four hundred eighteen billion, three hundred twenty million, two hundred fifty-six thousand, eighteen".