844827438321 has 8 divisors (see below), whose sum is σ = 1251596204960. Its totient is φ = 563218292196.

The previous prime is 844827438307. The next prime is 844827438337. The reversal of 844827438321 is 123834728448.

844827438321 is a `hidden beast` number, since 8 + 4 + 48 + 274 + 3 + 8 + 321 = 666.

It is not a de Polignac number, because 844827438321 - 2⁹ = 844827437809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844827438121) 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, 15644952535 + ... + 15644952588.

It is an arithmetic number, because the mean of its divisors is an integer number (156449525620).

Almost surely, 2^844827438321 is an apocalyptic number.

It is an amenable number.

844827438321 is a deficient number, since it is larger than the sum of its proper divisors (406768766639).

844827438321 is a wasteful number, since it uses less digits than its factorization.

844827438321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31289905132 (or 31289905126 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 54.

The spelling of 844827438321 in words is "eight hundred forty-four billion, eight hundred twenty-seven million, four hundred thirty-eight thousand, three hundred twenty-one".