66075557781323 has 8 divisors (see below), whose sum is σ = 66513556726176. Its totient is φ = 65637564264000.

The previous prime is 66075557781307. The next prime is 66075557781361. The reversal of 66075557781323 is 32318775557066.

66075557781323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66075557781323 - 2⁴ = 66075557781307 is a prime.

It is a super-3 number, since 3×66075557781323³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66075557781323.

It is not an unprimeable number, because it can be changed into a prime (66075557181323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24728615 + ... + 27270047.

It is an arithmetic number, because the mean of its divisors is an integer number (8314194590772).

Almost surely, 2^{66075557781323} is an apocalyptic number.

66075557781323 is a deficient number, since it is larger than the sum of its proper divisors (437998944853).

66075557781323 is a wasteful number, since it uses less digits than its factorization.

66075557781323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713765.

The product of its (nonzero) digits is 222264000, while the sum is 65.

The spelling of 66075557781323 in words is "sixty-six trillion, seventy-five billion, five hundred fifty-seven million, seven hundred eighty-one thousand, three hundred twenty-three".