66072564163 has 16 divisors (see below), whose sum is σ = 72662561280. Its totient is φ = 59800460544.

The previous prime is 66072564161. The next prime is 66072564167. The reversal of 66072564163 is 36146527066.

It is a cyclic number.

It is not a de Polignac number, because 66072564163 - 2¹ = 66072564161 is a prime.

It is a super-3 number, since 3×66072564163³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66072564161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267795 + ... + 451507.

It is an arithmetic number, because the mean of its divisors is an integer number (4541410080).

Almost surely, 2^66072564163 is an apocalyptic number.

66072564163 is a deficient number, since it is larger than the sum of its proper divisors (6589997117).

66072564163 is a wasteful number, since it uses less digits than its factorization.

66072564163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184578.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 66072564163 in words is "sixty-six billion, seventy-two million, five hundred sixty-four thousand, one hundred sixty-three".