866545683851320 has 64 divisors (see below), whose sum is σ = 2150874373701600. Its totient is φ = 311566987438080.

The previous prime is 866545683851291. The next prime is 866545683851333. The reversal of 866545683851320 is 23158386545668.

It is a self number, because there is not a number n which added to its sum of digits gives 866545683851320.

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 15 ways as a sum of consecutive naturals, for example, 11064129429 + ... + 11064207748.

Almost surely, 2^{866545683851320} is an apocalyptic number.

It is an amenable number.

866545683851320 is an abundant number, since it is smaller than the sum of its proper divisors (1284328689850280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866545683851320 is a wasteful number, since it uses less digits than its factorization.

866545683851320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22128337288 (or 22128337284 counting only the distinct ones).

The product of its (nonzero) digits is 995328000, while the sum is 70.

The spelling of 866545683851320 in words is "eight hundred sixty-six trillion, five hundred forty-five billion, six hundred eighty-three million, eight hundred fifty-one thousand, three hundred twenty".