866443844018182 has 12 divisors (see below), whose sum is σ = 1380613806818820. Its totient is φ = 407738279537696.

The previous prime is 866443844018149. The next prime is 866443844018237. The reversal of 866443844018182 is 281810448344668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749518895632 + ... + 749518896787.

It is an arithmetic number, because the mean of its divisors is an integer number (115051150568235).

Almost surely, 2^{866443844018182} is an apocalyptic number.

866443844018182 is a deficient number, since it is larger than the sum of its proper divisors (514169962800638).

866443844018182 is a wasteful number, since it uses less digits than its factorization.

866443844018182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499037792455 (or 1499037792438 counting only the distinct ones).

The product of its (nonzero) digits is 226492416, while the sum is 67.

The spelling of 866443844018182 in words is "eight hundred sixty-six trillion, four hundred forty-three billion, eight hundred forty-four million, eighteen thousand, one hundred eighty-two".