8720133973 has 2 divisors, whose sum is σ = 8720133974. Its totient is φ = 8720133972.

The previous prime is 8720133971. The next prime is 8720133991. The reversal of 8720133973 is 3793310278.

8720133973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8598296529 + 121837444 = 92727^2 + 11038^2 .

It is a cyclic number.

It is not a de Polignac number, because 8720133973 - 2¹ = 8720133971 is a prime.

Together with 8720133971, 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 (8720133971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360066986 + 4360066987.

It is an arithmetic number, because the mean of its divisors is an integer number (4360066987).

Almost surely, 2^8720133973 is an apocalyptic number.

It is an amenable number.

8720133973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8720133973 is an equidigital number, since it uses as much as digits as its factorization.

8720133973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 8720133973 is about 93381.6575832749. The cubic root of 8720133973 is about 2058.2954741673.

The spelling of 8720133973 in words is "eight billion, seven hundred twenty million, one hundred thirty-three thousand, nine hundred seventy-three".