866729996765 has 8 divisors (see below), whose sum is σ = 1042820262240. Its totient is φ = 691554486672.

The previous prime is 866729996761. The next prime is 866729996849. The reversal of 866729996765 is 567699927668.

866729996765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 866729996765 - 2² = 866729996761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866729996765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866729996761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228686759 + ... + 228690548.

It is an arithmetic number, because the mean of its divisors is an integer number (130352532780).

Almost surely, 2^866729996765 is an apocalyptic number.

It is an amenable number.

866729996765 is a deficient number, since it is larger than the sum of its proper divisors (176090265475).

866729996765 is a wasteful number, since it uses less digits than its factorization.

866729996765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457377691.

The product of its digits is 3703553280, while the sum is 80.

The spelling of 866729996765 in words is "eight hundred sixty-six billion, seven hundred twenty-nine million, nine hundred ninety-six thousand, seven hundred sixty-five".