6443069321138 has 32 divisors (see below), whose sum is σ = 10361214090864. Its totient is φ = 2994305236992.

The previous prime is 6443069321107. The next prime is 6443069321173. The reversal of 6443069321138 is 8311239603446.

It can be written as a sum of positive squares in 8 ways, for example, as 2228699651689 + 4214369669449 = 1492883^2 + 2052893^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2684495 + ... + 4482482.

Almost surely, 2^{6443069321138} is an apocalyptic number.

6443069321138 is a deficient number, since it is larger than the sum of its proper divisors (3918144769726).

6443069321138 is a wasteful number, since it uses less digits than its factorization.

6443069321138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7167326.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 6443069321138 in words is "six trillion, four hundred forty-three billion, sixty-nine million, three hundred twenty-one thousand, one hundred thirty-eight".