844894005651 has 6 divisors (see below), whose sum is σ = 1220402452620. Its totient is φ = 563262670428.

The previous prime is 844894005619. The next prime is 844894005661. The reversal of 844894005651 is 156500498448.

It is not a de Polignac number, because 844894005651 - 2⁵ = 844894005619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (844894005661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46938555861 + ... + 46938555878.

It is an arithmetic number, because the mean of its divisors is an integer number (203400408770).

Almost surely, 2^844894005651 is an apocalyptic number.

844894005651 is a deficient number, since it is larger than the sum of its proper divisors (375508446969).

844894005651 is a wasteful number, since it uses less digits than its factorization.

844894005651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93877111745 (or 93877111742 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 844894005651 in words is "eight hundred forty-four billion, eight hundred ninety-four million, five thousand, six hundred fifty-one".