6839905637965 has 8 divisors (see below), whose sum is σ = 8208026441208. Its totient is φ = 5471831393280.

The previous prime is 6839905637879. The next prime is 6839905637989. The reversal of 6839905637965 is 5697365099386.

It can be written as a sum of positive squares in 4 ways, for example, as 466032867556 + 6373872770409 = 682666^2 + 2524653^2 .

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

It is not a de Polignac number, because 6839905637965 - 2²⁹ = 6839368767053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6839905637891 and 6839905637900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11315616 + ... + 11904745.

It is an arithmetic number, because the mean of its divisors is an integer number (1026003305151).

Almost surely, 2^{6839905637965} is an apocalyptic number.

It is an amenable number.

6839905637965 is a deficient number, since it is larger than the sum of its proper divisors (1368120803243).

6839905637965 is a wasteful number, since it uses less digits than its factorization.

6839905637965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23279279.

The product of its (nonzero) digits is 1984046400, while the sum is 76.

The spelling of 6839905637965 in words is "six trillion, eight hundred thirty-nine billion, nine hundred five million, six hundred thirty-seven thousand, nine hundred sixty-five".