66110423540425 has 24 divisors (see below), whose sum is σ = 89551377809280. Its totient is φ = 48014714011200.

The previous prime is 66110423540353. The next prime is 66110423540531. The reversal of 66110423540425 is 52404532401166.

It is not a de Polignac number, because 66110423540425 - 2⁷ = 66110423540297 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 163783105 + ... + 164186254.

It is an arithmetic number, because the mean of its divisors is an integer number (3731307408720).

Almost surely, 2^{66110423540425} is an apocalyptic number.

It is an amenable number.

66110423540425 is a deficient number, since it is larger than the sum of its proper divisors (23440954268855).

66110423540425 is a wasteful number, since it uses less digits than its factorization.

66110423540425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327970113 (or 327970108 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 66110423540425 in words is "sixty-six trillion, one hundred ten billion, four hundred twenty-three million, five hundred forty thousand, four hundred twenty-five".