866786517725468 has 12 divisors (see below), whose sum is σ = 1516971921300192. Its totient is φ = 433365968782560.

The previous prime is 866786517725437. The next prime is 866786517725489. The reversal of 866786517725468 is 864527715687668.

It is a self number, because there is not a number n which added to its sum of digits gives 866786517725468.

It is a congruent number.

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, 6822448580 + ... + 6822575627.

It is an arithmetic number, because the mean of its divisors is an integer number (126414326775016).

Almost surely, 2^{866786517725468} is an apocalyptic number.

It is an amenable number.

866786517725468 is a deficient number, since it is larger than the sum of its proper divisors (650185403574724).

866786517725468 is a wasteful number, since it uses less digits than its factorization.

866786517725468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13645040092 (or 13645040090 counting only the distinct ones).

The product of its digits is 45519667200, while the sum is 86.

The spelling of 866786517725468 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, five hundred seventeen million, seven hundred twenty-five thousand, four hundred sixty-eight".