66110243212 has 24 divisors (see below), whose sum is σ = 131921346816. Its totient is φ = 28717571328.

The previous prime is 66110243189. The next prime is 66110243239. The reversal of 66110243212 is 21234201166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37391788 + ... + 37393555.

It is an arithmetic number, because the mean of its divisors is an integer number (5496722784).

Almost surely, 2^66110243212 is an apocalyptic number.

It is an amenable number.

66110243212 is a deficient number, since it is larger than the sum of its proper divisors (65811103604).

66110243212 is a wasteful number, since it uses less digits than its factorization.

66110243212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74785377 (or 74785375 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 66110243212 its reverse (21234201166), we get a palindrome (87344444378).

The spelling of 66110243212 in words is "sixty-six billion, one hundred ten million, two hundred forty-three thousand, two hundred twelve".