66594043153 has 6 divisors (see below), whose sum is σ = 73198411202. Its totient is φ = 60540039120.

The previous prime is 66594043151. The next prime is 66594043177. The reversal of 66594043153 is 35134049566.

It can be written as a sum of positive squares in only one way, i.e., 44174371329 + 22419671824 = 210177^2 + 149732^2 .

It is not a de Polignac number, because 66594043153 - 2¹ = 66594043151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66594043151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275181876 + ... + 275182117.

Almost surely, 2^66594043153 is an apocalyptic number.

It is an amenable number.

66594043153 is a deficient number, since it is larger than the sum of its proper divisors (6604368049).

66594043153 is a wasteful number, since it uses less digits than its factorization.

66594043153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550364015 (or 550364004 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 66594043153 in words is "sixty-six billion, five hundred ninety-four million, forty-three thousand, one hundred fifty-three".