65555015065 has 16 divisors (see below), whose sum is σ = 79841129616. Its totient is φ = 51662361600.

The previous prime is 65555015063. The next prime is 65555015083. The reversal of 65555015065 is 56051055556.

It can be written as a sum of positive squares in 8 ways, for example, as 368755209 + 65186259856 = 19203^2 + 255316^2 .

It is not a de Polignac number, because 65555015065 - 2¹ = 65555015063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65555015063) 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 in 15 ways as a sum of consecutive naturals, for example, 190285 + ... + 409045.

It is an arithmetic number, because the mean of its divisors is an integer number (4990070601).

Almost surely, 2^65555015065 is an apocalyptic number.

It is an amenable number.

65555015065 is a deficient number, since it is larger than the sum of its proper divisors (14286114551).

65555015065 is a wasteful number, since it uses less digits than its factorization.

65555015065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219660.

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 65555015065 in words is "sixty-five billion, five hundred fifty-five million, fifteen thousand, sixty-five".