844443540912 has 30 divisors (see below), whose sum is σ = 2181495594468. Its totient is φ = 281479058112.

The previous prime is 844443540887. The next prime is 844443540943. The reversal of 844443540912 is 219045344448.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6300258 + ... + 6432894.

Almost surely, 2^844443540912 is an apocalyptic number.

It is an amenable number.

844443540912 is an abundant number, since it is smaller than the sum of its proper divisors (1337052053556).

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

844443540912 is an frugal number, since it uses more digits than its factorization.

844443540912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265285 (or 132642 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 48.

Multiplying 844443540912 by its sum of digits (48), we get a square (40533289963776 = 6366576²).

844443540912 divided by its sum of digits (48) gives a square (17592573769 = 132637²).

The spelling of 844443540912 in words is "eight hundred forty-four billion, four hundred forty-three million, five hundred forty thousand, nine hundred twelve".