866802166064284 has 6 divisors (see below), whose sum is σ = 1516903790612504. Its totient is φ = 433401083032140.

The previous prime is 866802166064227. The next prime is 866802166064293. The reversal of 866802166064284 is 482460661208668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108350270758032 + ... + 108350270758039.

Almost surely, 2^{866802166064284} is an apocalyptic number.

It is an amenable number.

866802166064284 is a deficient number, since it is larger than the sum of its proper divisors (650101624548220).

866802166064284 is a wasteful number, since it uses less digits than its factorization.

866802166064284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216700541516075 (or 216700541516073 counting only the distinct ones).

The product of its (nonzero) digits is 254803968, while the sum is 67.

The spelling of 866802166064284 in words is "eight hundred sixty-six trillion, eight hundred two billion, one hundred sixty-six million, sixty-four thousand, two hundred eighty-four".