6386967540409 has 8 divisors (see below), whose sum is σ = 6474638375912. Its totient is φ = 6299301519360.

The previous prime is 6386967540397. The next prime is 6386967540413. The reversal of 6386967540409 is 9040457696836.

It can be written as a sum of positive squares in 4 ways, for example, as 4851777155625 + 1535190384784 = 2202675^2 + 1239028^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6386967540409 - 2⁷ = 6386967540281 is a prime.

It is a super-3 number, since 3×6386967540409³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6386967540209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509529 + ... + 3879769.

It is an arithmetic number, because the mean of its divisors is an integer number (809329796989).

Almost surely, 2^{6386967540409} is an apocalyptic number.

It is an amenable number.

6386967540409 is a deficient number, since it is larger than the sum of its proper divisors (87670835503).

6386967540409 is a wasteful number, since it uses less digits than its factorization.

6386967540409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407227.

The product of its (nonzero) digits is 235146240, while the sum is 67.

The spelling of 6386967540409 in words is "six trillion, three hundred eighty-six billion, nine hundred sixty-seven million, five hundred forty thousand, four hundred nine".