66223366145 has 16 divisors (see below), whose sum is σ = 79968394560. Its totient is φ = 52646013504.

The previous prime is 66223366141. The next prime is 66223366151. The reversal of 66223366145 is 54166332266.

It is a cyclic number.

It is not a de Polignac number, because 66223366145 - 2² = 66223366141 is a prime.

It is a super-3 number, since 3×66223366145³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66223366096 and 66223366105.

It is not an unprimeable number, because it can be changed into a prime (66223366141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543542 + ... + 654128.

It is an arithmetic number, because the mean of its divisors is an integer number (4998024660).

Almost surely, 2^66223366145 is an apocalyptic number.

It is an amenable number.

66223366145 is a deficient number, since it is larger than the sum of its proper divisors (13745028415).

66223366145 is a wasteful number, since it uses less digits than its factorization.

66223366145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111344.

The product of its digits is 933120, while the sum is 44.

The spelling of 66223366145 in words is "sixty-six billion, two hundred twenty-three million, three hundred sixty-six thousand, one hundred forty-five".