844842817161 has 24 divisors (see below), whose sum is σ = 1432354707264. Its totient is φ = 469719557280.

The previous prime is 844842817157. The next prime is 844842817163. The reversal of 844842817161 is 161718248448.

844842817161 is a `hidden beast` number, since 8 + 4 + 48 + 428 + 17 + 161 = 666.

It is not a de Polignac number, because 844842817161 - 2² = 844842817157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 844842817098 and 844842817107.

It is not an unprimeable number, because it can be changed into a prime (844842817163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181216635 + ... + 181221296.

It is an arithmetic number, because the mean of its divisors is an integer number (59681446136).

Almost surely, 2^844842817161 is an apocalyptic number.

It is an amenable number.

844842817161 is a deficient number, since it is larger than the sum of its proper divisors (587511890103).

844842817161 is a wasteful number, since it uses less digits than its factorization.

844842817161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362437981 (or 362437978 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 54.

The spelling of 844842817161 in words is "eight hundred forty-four billion, eight hundred forty-two million, eight hundred seventeen thousand, one hundred sixty-one".