844063834881 has 4 divisors (see below), whose sum is σ = 1125418446512. Its totient is φ = 562709223252.

The previous prime is 844063834837. The next prime is 844063834903. The reversal of 844063834881 is 188438360448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 844063834881 - 2¹⁴ = 844063818497 is a prime.

It is a super-2 number, since 2×844063834881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844063834811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140677305811 + ... + 140677305816.

It is an arithmetic number, because the mean of its divisors is an integer number (281354611628).

Almost surely, 2^844063834881 is an apocalyptic number.

It is an amenable number.

844063834881 is a deficient number, since it is larger than the sum of its proper divisors (281354611631).

844063834881 is a wasteful number, since it uses less digits than its factorization.

844063834881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281354611630.

The product of its (nonzero) digits is 14155776, while the sum is 57.

The spelling of 844063834881 in words is "eight hundred forty-four billion, sixty-three million, eight hundred thirty-four thousand, eight hundred eighty-one".