866941149668 has 12 divisors (see below), whose sum is σ = 1655069467632. Its totient is φ = 394064158920.

The previous prime is 866941149643. The next prime is 866941149727.

866941149668 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 866941149598 and 866941149607.

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 3 ways as a sum of consecutive naturals, for example, 9851603930 + ... + 9851604017.

It is an arithmetic number, because the mean of its divisors is an integer number (137922455636).

Almost surely, 2^866941149668 is an apocalyptic number.

It is an amenable number.

866941149668 is a deficient number, since it is larger than the sum of its proper divisors (788128317964).

866941149668 is a wasteful number, since it uses less digits than its factorization.

866941149668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19703207962 (or 19703207960 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 68.

The spelling of 866941149668 in words is "eight hundred sixty-six billion, nine hundred forty-one million, one hundred forty-nine thousand, six hundred sixty-eight".