65555015089 has 2 divisors, whose sum is σ = 65555015090. Its totient is φ = 65555015088.

The previous prime is 65555015083. The next prime is 65555015131. The reversal of 65555015089 is 98051055556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65348230689 + 206784400 = 255633^2 + 14380^2 .

It is a cyclic number.

It is not a de Polignac number, because 65555015089 - 2¹⁵ = 65554982321 is a prime.

It is not a weakly prime, because it can be changed into another prime (65555015083) 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, 32777507544 + 32777507545.

It is an arithmetic number, because the mean of its divisors is an integer number (32777507545).

Almost surely, 2^65555015089 is an apocalyptic number.

It is an amenable number.

65555015089 is a deficient number, since it is larger than the sum of its proper divisors (1).

65555015089 is an equidigital number, since it uses as much as digits as its factorization.

65555015089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350000, while the sum is 49.

The spelling of 65555015089 in words is "sixty-five billion, five hundred fifty-five million, fifteen thousand, eighty-nine".