844381796136 has 64 divisors (see below), whose sum is σ = 2179186636800. Its totient is φ = 272364120000.

The previous prime is 844381796131. The next prime is 844381796221. The reversal of 844381796136 is 631697183448.

It is a self number, because there is not a number n which added to its sum of digits gives 844381796136.

It is not an unprimeable number, because it can be changed into a prime (844381796131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17846511 + ... + 17893761.

It is an arithmetic number, because the mean of its divisors is an integer number (34049791200).

Almost surely, 2^844381796136 is an apocalyptic number.

It is an amenable number.

844381796136 is an abundant number, since it is smaller than the sum of its proper divisors (1334804840664).

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

844381796136 is a wasteful number, since it uses less digits than its factorization.

844381796136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71310 (or 71306 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 60.

The spelling of 844381796136 in words is "eight hundred forty-four billion, three hundred eighty-one million, seven hundred ninety-six thousand, one hundred thirty-six".