66144067653 has 8 divisors (see below), whose sum is σ = 93379860288. Its totient is φ = 41502160064.

The previous prime is 66144067607. The next prime is 66144067669. The reversal of 66144067653 is 35676044166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66144067653 - 2¹³ = 66144059461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66144067553) 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 7 ways as a sum of consecutive naturals, for example, 648471201 + ... + 648471302.

It is an arithmetic number, because the mean of its divisors is an integer number (11672482536).

Almost surely, 2^66144067653 is an apocalyptic number.

It is an amenable number.

66144067653 is a deficient number, since it is larger than the sum of its proper divisors (27235792635).

66144067653 is a wasteful number, since it uses less digits than its factorization.

66144067653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296942523.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 66144067653 in words is "sixty-six billion, one hundred forty-four million, sixty-seven thousand, six hundred fifty-three".