844313563830 has 128 divisors (see below), whose sum is σ = 2216819404800. Its totient is φ = 204103958400.

The previous prime is 844313563811. The next prime is 844313563859. The reversal of 844313563830 is 38365313448.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 844313563830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 237231591 + ... + 237235149.

It is an arithmetic number, because the mean of its divisors is an integer number (17318901600).

Almost surely, 2^844313563830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 844313563830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1108409702400).

844313563830 is an abundant number, since it is smaller than the sum of its proper divisors (1372505840970).

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

844313563830 is a wasteful number, since it uses less digits than its factorization.

844313563830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 844313563830 in words is "eight hundred forty-four billion, three hundred thirteen million, five hundred sixty-three thousand, eight hundred thirty".