844128485288 has 16 divisors (see below), whose sum is σ = 1726626447360. Its totient is φ = 383694766000.

The previous prime is 844128485279. The next prime is 844128485303. The reversal of 844128485288 is 882584821448.

It is a super-2 number, since 2×844128485288² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 844128485288.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4796184488 + ... + 4796184663.

It is an arithmetic number, because the mean of its divisors is an integer number (107914152960).

Almost surely, 2^844128485288 is an apocalyptic number.

844128485288 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

844128485288 is an abundant number, since it is smaller than the sum of its proper divisors (882497962072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844128485288 is a wasteful number, since it uses less digits than its factorization.

844128485288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9592369168 (or 9592369164 counting only the distinct ones).

The product of its digits is 41943040, while the sum is 62.

The spelling of 844128485288 in words is "eight hundred forty-four billion, one hundred twenty-eight million, four hundred eighty-five thousand, two hundred eighty-eight".