8560721441 has 2 divisors, whose sum is σ = 8560721442. Its totient is φ = 8560721440.

The previous prime is 8560721419. The next prime is 8560721459. The reversal of 8560721441 is 1441270658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8445610000 + 115111441 = 91900^2 + 10729^2 .

It is a cyclic number.

It is not a de Polignac number, because 8560721441 - 2¹⁴ = 8560705057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8560721395 and 8560721404.

It is not a weakly prime, because it can be changed into another prime (8560721341) 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, 4280360720 + 4280360721.

It is an arithmetic number, because the mean of its divisors is an integer number (4280360721).

Almost surely, 2^8560721441 is an apocalyptic number.

It is an amenable number.

8560721441 is a deficient number, since it is larger than the sum of its proper divisors (1).

8560721441 is an equidigital number, since it uses as much as digits as its factorization.

8560721441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 8560721441 is about 92524.1667944111. The cubic root of 8560721441 is about 2045.6757104947.

The spelling of 8560721441 in words is "eight billion, five hundred sixty million, seven hundred twenty-one thousand, four hundred forty-one".