966643321111 has 16 divisors (see below), whose sum is σ = 1107086831200. Its totient is φ = 836609015808.

The previous prime is 966643321087. The next prime is 966643321117. The reversal of 966643321111 is 111123346669.

It is a cyclic number.

It is not a de Polignac number, because 966643321111 - 2³³ = 958053386519 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966643321117) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20148906 + ... + 20196823.

It is an arithmetic number, because the mean of its divisors is an integer number (69192926950).

Almost surely, 2^966643321111 is an apocalyptic number.

966643321111 is a deficient number, since it is larger than the sum of its proper divisors (140443510089).

966643321111 is a wasteful number, since it uses less digits than its factorization.

966643321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40345858.

The product of its digits is 139968, while the sum is 43.

The spelling of 966643321111 in words is "nine hundred sixty-six billion, six hundred forty-three million, three hundred twenty-one thousand, one hundred eleven".