866381683760 has 20 divisors (see below), whose sum is σ = 2014337414928. Its totient is φ = 346552673472.

The previous prime is 866381683723. The next prime is 866381683787. The reversal of 866381683760 is 67386183668.

It is a happy number.

866381683760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 866381683693 and 866381683702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5414885444 + ... + 5414885603.

Almost surely, 2^866381683760 is an apocalyptic number.

866381683760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

866381683760 is an abundant number, since it is smaller than the sum of its proper divisors (1147955731168).

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

866381683760 is a wasteful number, since it uses less digits than its factorization.

866381683760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10829771060 (or 10829771054 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 62.

The spelling of 866381683760 in words is "eight hundred sixty-six billion, three hundred eighty-one million, six hundred eighty-three thousand, seven hundred sixty".