3218085637408 has 24 divisors (see below), whose sum is σ = 6422395227948. Its totient is φ = 1587001135104.

The previous prime is 3218085637381. The next prime is 3218085637409. The reversal of 3218085637408 is 8047365808123.

3218085637408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3012959980944 + 205125656464 = 1735788^2 + 452908^2 .

It is not an unprimeable number, because it can be changed into a prime (3218085637409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688800241 + ... + 688804912.

Almost surely, 2^{3218085637408} is an apocalyptic number.

It is an amenable number.

3218085637408 is a deficient number, since it is larger than the sum of its proper divisors (3204309590540).

3218085637408 is a wasteful number, since it uses less digits than its factorization.

3218085637408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377605236 (or 1377605228 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 3218085637408 in words is "three trillion, two hundred eighteen billion, eighty-five million, six hundred thirty-seven thousand, four hundred eight".