8344784338661 has 8 divisors (see below), whose sum is σ = 8786465637600. Its totient is φ = 7903351252080.

The previous prime is 8344784338637. The next prime is 8344784338669. The reversal of 8344784338661 is 1668334874438.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8344784338661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8344784338669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61984070 + ... + 62118551.

It is an arithmetic number, because the mean of its divisors is an integer number (1098308204700).

Almost surely, 2^{8344784338661} is an apocalyptic number.

It is an amenable number.

8344784338661 is a deficient number, since it is larger than the sum of its proper divisors (441681298939).

8344784338661 is a wasteful number, since it uses less digits than its factorization.

8344784338661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124106179.

The product of its digits is 222953472, while the sum is 65.

The spelling of 8344784338661 in words is "eight trillion, three hundred forty-four billion, seven hundred eighty-four million, three hundred thirty-eight thousand, six hundred sixty-one".