6438040360313 has 4 divisors (see below), whose sum is σ = 6816748616820. Its totient is φ = 6059332103808.

The previous prime is 6438040360267. The next prime is 6438040360321. The reversal of 6438040360313 is 3130630408346.

6438040360313 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2236962939904 + 4201077420409 = 1495648^2 + 2049653^2 .

It is not a de Polignac number, because 6438040360313 - 2³² = 6433745393017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6438040360513) 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, 189354128228 + ... + 189354128261.

It is an arithmetic number, because the mean of its divisors is an integer number (1704187154205).

Almost surely, 2^{6438040360313} is an apocalyptic number.

It is an amenable number.

6438040360313 is a deficient number, since it is larger than the sum of its proper divisors (378708256507).

6438040360313 is a wasteful number, since it uses less digits than its factorization.

6438040360313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378708256506.

The product of its (nonzero) digits is 373248, while the sum is 41.

Adding to 6438040360313 its reverse (3130630408346), we get a palindrome (9568670768659).

The spelling of 6438040360313 in words is "six trillion, four hundred thirty-eight billion, forty million, three hundred sixty thousand, three hundred thirteen".