866802376442278 has 16 divisors (see below), whose sum is σ = 1316819921256000. Its totient is φ = 427863720053952.

The previous prime is 866802376442237. The next prime is 866802376442287. The reversal of 866802376442278 is 872244673208668.

It is a self number, because there is not a number n which added to its sum of digits gives 866802376442278.

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 in 7 ways as a sum of consecutive naturals, for example, 328020733 + ... + 330652696.

It is an arithmetic number, because the mean of its divisors is an integer number (82301245078500).

Almost surely, 2^{866802376442278} is an apocalyptic number.

866802376442278 is a deficient number, since it is larger than the sum of its proper divisors (450017544813722).

866802376442278 is a wasteful number, since it uses less digits than its factorization.

866802376442278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658681839.

The product of its (nonzero) digits is 2080899072, while the sum is 73.

The spelling of 866802376442278 in words is "eight hundred sixty-six trillion, eight hundred two billion, three hundred seventy-six million, four hundred forty-two thousand, two hundred seventy-eight".