844121258993 has 8 divisors (see below), whose sum is σ = 845278663680. Its totient is φ = 842964444000.

The previous prime is 844121258947. The next prime is 844121258999. The reversal of 844121258993 is 399852121448.

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 844121258993 - 2¹² = 844121254897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844121258999) by changing a digit.

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, 2756528 + ... + 3047406.

It is an arithmetic number, because the mean of its divisors is an integer number (105659832960).

Almost surely, 2^844121258993 is an apocalyptic number.

It is an amenable number.

844121258993 is a deficient number, since it is larger than the sum of its proper divisors (1157404687).

844121258993 is a wasteful number, since it uses less digits than its factorization.

844121258993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294847.

The product of its digits is 4976640, while the sum is 56.

The spelling of 844121258993 in words is "eight hundred forty-four billion, one hundred twenty-one million, two hundred fifty-eight thousand, nine hundred ninety-three".