844628208673 has 2 divisors, whose sum is σ = 844628208674. Its totient is φ = 844628208672.

The previous prime is 844628208667. The next prime is 844628208733. The reversal of 844628208673 is 376802826448.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521330209024 + 323297999649 = 722032^2 + 568593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-844628208673 is a prime.

It is not a weakly prime, because it can be changed into another prime (844628208623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422314104336 + 422314104337.

It is an arithmetic number, because the mean of its divisors is an integer number (422314104337).

Almost surely, 2^844628208673 is an apocalyptic number.

It is an amenable number.

844628208673 is a deficient number, since it is larger than the sum of its proper divisors (1).

844628208673 is an equidigital number, since it uses as much as digits as its factorization.

844628208673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24772608, while the sum is 58.

The spelling of 844628208673 in words is "eight hundred forty-four billion, six hundred twenty-eight million, two hundred eight thousand, six hundred seventy-three".