66125756665303 has 4 divisors (see below), whose sum is σ = 66129438723280. Its totient is φ = 66122074607328.

The previous prime is 66125756665279. The next prime is 66125756665327. The reversal of 66125756665303 is 30356665752166.

66125756665303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66125756665279) and next prime (66125756665327).

It is a cyclic number.

It is not a de Polignac number, because 66125756665303 - 2¹³ = 66125756657111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66125756665393) 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 3 ways as a sum of consecutive naturals, for example, 1841002050 + ... + 1841037967.

It is an arithmetic number, because the mean of its divisors is an integer number (16532359680820).

Almost surely, 2^{66125756665303} is an apocalyptic number.

66125756665303 is a deficient number, since it is larger than the sum of its proper divisors (3682057977).

66125756665303 is a wasteful number, since it uses less digits than its factorization.

66125756665303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682057976.

The product of its (nonzero) digits is 122472000, while the sum is 61.

The spelling of 66125756665303 in words is "sixty-six trillion, one hundred twenty-five billion, seven hundred fifty-six million, six hundred sixty-five thousand, three hundred three".