844536532993 has 2 divisors, whose sum is σ = 844536532994. Its totient is φ = 844536532992.

The previous prime is 844536532963. The next prime is 844536533053. The reversal of 844536532993 is 399235635448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837971806464 + 6564726529 = 915408^2 + 81023^2 .

It is a cyclic number.

It is not a de Polignac number, because 844536532993 - 2¹⁷ = 844536401921 is a prime.

It is not a weakly prime, because it can be changed into another prime (844536532963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422268266496 + 422268266497.

It is an arithmetic number, because the mean of its divisors is an integer number (422268266497).

Almost surely, 2^844536532993 is an apocalyptic number.

It is an amenable number.

844536532993 is a deficient number, since it is larger than the sum of its proper divisors (1).

844536532993 is an equidigital number, since it uses as much as digits as its factorization.

844536532993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83980800, while the sum is 61.

The spelling of 844536532993 in words is "eight hundred forty-four billion, five hundred thirty-six million, five hundred thirty-two thousand, nine hundred ninety-three".