844721282739811 has 2 divisors, whose sum is σ = 844721282739812. Its totient is φ = 844721282739810.

The previous prime is 844721282739751. The next prime is 844721282739907. The reversal of 844721282739811 is 118937282127448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 844721282739811 - 2⁷ = 844721282739683 is a prime.

It is not a weakly prime, because it can be changed into another prime (844721282734811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422360641369905 + 422360641369906.

It is an arithmetic number, because the mean of its divisors is an integer number (422360641369906).

Almost surely, 2^{844721282739811} is an apocalyptic number.

844721282739811 is a deficient number, since it is larger than the sum of its proper divisors (1).

844721282739811 is an equidigital number, since it uses as much as digits as its factorization.

844721282739811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86704128, while the sum is 67.

The spelling of 844721282739811 in words is "eight hundred forty-four trillion, seven hundred twenty-one billion, two hundred eighty-two million, seven hundred thirty-nine thousand, eight hundred eleven".