8117744773 has 2 divisors, whose sum is σ = 8117744774. Its totient is φ = 8117744772.

The previous prime is 8117744771. The next prime is 8117744797. The reversal of 8117744773 is 3774477118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4790993089 + 3326751684 = 69217^2 + 57678^2 .

It is a cyclic number.

It is not a de Polignac number, because 8117744773 - 2¹ = 8117744771 is a prime.

Together with 8117744771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8117744771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058872386 + 4058872387.

It is an arithmetic number, because the mean of its divisors is an integer number (4058872387).

Almost surely, 2^8117744773 is an apocalyptic number.

It is an amenable number.

8117744773 is a deficient number, since it is larger than the sum of its proper divisors (1).

8117744773 is an equidigital number, since it uses as much as digits as its factorization.

8117744773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921984, while the sum is 49.

The square root of 8117744773 is about 90098.5281400312. The cubic root of 8117744773 is about 2009.7643159051.

The spelling of 8117744773 in words is "eight billion, one hundred seventeen million, seven hundred forty-four thousand, seven hundred seventy-three".