844284863656 has 24 divisors (see below), whose sum is σ = 1714173043230. Its totient is φ = 389669936448.

The previous prime is 844284863603. The next prime is 844284863671. The reversal of 844284863656 is 656368482448.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 556763699556 + 287521164100 = 746166^2 + 536210^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312234175 + ... + 312236878.

Almost surely, 2^844284863656 is an apocalyptic number.

It is an amenable number.

844284863656 is an abundant number, since it is smaller than the sum of its proper divisors (869888179574).

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

844284863656 is a wasteful number, since it uses less digits than its factorization.

844284863656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624471085 (or 624471068 counting only the distinct ones).

The product of its digits is 212336640, while the sum is 64.

The spelling of 844284863656 in words is "eight hundred forty-four billion, two hundred eighty-four million, eight hundred sixty-three thousand, six hundred fifty-six".