65000066066 has 16 divisors (see below), whose sum is σ = 111176584344. Its totient is φ = 28235322624.

The previous prime is 65000066057. The next prime is 65000066093. The reversal of 65000066066 is 66066000056.

It can be written as a sum of positive squares in 4 ways, for example, as 51902408041 + 13097658025 = 227821^2 + 114445^2 .

It is a super-3 number, since 3×65000066066³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73529045 + ... + 73529928.

Almost surely, 2^65000066066 is an apocalyptic number.

65000066066 is a deficient number, since it is larger than the sum of its proper divisors (46176518278).

65000066066 is a wasteful number, since it uses less digits than its factorization.

65000066066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147059005.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 65000066066 in words is "sixty-five billion, sixty-six thousand, sixty-six".