66828386027 has 16 divisors (see below), whose sum is σ = 76220020800. Its totient is φ = 58045704192.

The previous prime is 66828385969. The next prime is 66828386041. The reversal of 66828386027 is 72068382866.

It is a cyclic number.

It is not a de Polignac number, because 66828386027 - 2⁶ = 66828385963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66828380027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998099 + ... + 1062947.

It is an arithmetic number, because the mean of its divisors is an integer number (4763751300).

Almost surely, 2^66828386027 is an apocalyptic number.

66828386027 is a deficient number, since it is larger than the sum of its proper divisors (9391634773).

66828386027 is a wasteful number, since it uses less digits than its factorization.

66828386027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69542.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 66828386027 in words is "sixty-six billion, eight hundred twenty-eight million, three hundred eighty-six thousand, twenty-seven".