966545888545669 has 2 divisors, whose sum is σ = 966545888545670. Its totient is φ = 966545888545668.

The previous prime is 966545888545667. The next prime is 966545888545681.

966545888545669 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605281284076225 + 361264604469444 = 24602465^2 + 19006962^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 966545888545669 - 2¹ = 966545888545667 is a prime.

It is a super-2 number, since 2×966545888545669² (a number of 31 digits) contains 22 as substring.

Together with 966545888545667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966545888545663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483272944272834 + 483272944272835.

It is an arithmetic number, because the mean of its divisors is an integer number (483272944272835).

Almost surely, 2^{966545888545669} is an apocalyptic number.

It is an amenable number.

966545888545669 is a deficient number, since it is larger than the sum of its proper divisors (1).

966545888545669 is an equidigital number, since it uses as much as digits as its factorization.

966545888545669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537477120000, while the sum is 94.

The spelling of 966545888545669 in words is "nine hundred sixty-six trillion, five hundred forty-five billion, eight hundred eighty-eight million, five hundred forty-five thousand, six hundred sixty-nine".