844059785040 has 160 divisors (see below), whose sum is σ = 2907724608000. Its totient is φ = 225051056640.

The previous prime is 844059785033. The next prime is 844059785069. The reversal of 844059785040 is 40587950448.

It is a happy number.

844059785040 is a `hidden beast` number, since 8 + 4 + 4 + 0 + 597 + 8 + 5 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18187786 + ... + 18234134.

It is an arithmetic number, because the mean of its divisors is an integer number (18173278800).

Almost surely, 2^844059785040 is an apocalyptic number.

844059785040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

844059785040 is an abundant number, since it is smaller than the sum of its proper divisors (2063664822960).

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

844059785040 is a wasteful number, since it uses less digits than its factorization.

844059785040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54802 (or 54790 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 844059785040 in words is "eight hundred forty-four billion, fifty-nine million, seven hundred eighty-five thousand, forty".