6485511289 has 2 divisors, whose sum is σ = 6485511290. Its totient is φ = 6485511288.

The previous prime is 6485511239. The next prime is 6485511311. The reversal of 6485511289 is 9821155846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4313205625 + 2172305664 = 65675^2 + 46608^2 .

It is a cyclic number.

It is not a de Polignac number, because 6485511289 - 2⁷ = 6485511161 is a prime.

It is not a weakly prime, because it can be changed into another prime (6485511239) 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, 3242755644 + 3242755645.

It is an arithmetic number, because the mean of its divisors is an integer number (3242755645).

Almost surely, 2^6485511289 is an apocalyptic number.

It is an amenable number.

6485511289 is a deficient number, since it is larger than the sum of its proper divisors (1).

6485511289 is an equidigital number, since it uses as much as digits as its factorization.

6485511289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 49.

The square root of 6485511289 is about 80532.6721834064. The cubic root of 6485511289 is about 1864.8678987477.

The spelling of 6485511289 in words is "six billion, four hundred eighty-five million, five hundred eleven thousand, two hundred eighty-nine".