866786517536322 has 16 divisors (see below), whose sum is σ = 1733701324514400. Its totient is φ = 288907457605152.

The previous prime is 866786517536243. The next prime is 866786517536353. The reversal of 866786517536322 is 223635715687668.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5345305572 + ... + 5345467727.

It is an arithmetic number, because the mean of its divisors is an integer number (108356332782150).

Almost surely, 2^{866786517536322} is an apocalyptic number.

866786517536322 is an abundant number, since it is smaller than the sum of its proper divisors (866914806978078).

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

866786517536322 is a wasteful number, since it uses less digits than its factorization.

866786517536322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690786817.

The product of its digits is 3657830400, while the sum is 75.

The spelling of 866786517536322 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, five hundred seventeen million, five hundred thirty-six thousand, three hundred twenty-two".