6438138318346 has 64 divisors (see below), whose sum is σ = 11204965820160. Its totient is φ = 2717486553600.

The previous prime is 6438138318317. The next prime is 6438138318421.

6438138318346 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226608990 + ... + 226637398.

It is an arithmetic number, because the mean of its divisors is an integer number (175077590940).

Almost surely, 2^{6438138318346} is an apocalyptic number.

6438138318346 is a deficient number, since it is larger than the sum of its proper divisors (4766827501814).

6438138318346 is a wasteful number, since it uses less digits than its factorization.

6438138318346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29359.

The product of its digits is 23887872, while the sum is 58.

The spelling of 6438138318346 in words is "six trillion, four hundred thirty-eight billion, one hundred thirty-eight million, three hundred eighteen thousand, three hundred forty-six".