866786462176164 has 24 divisors (see below), whose sum is σ = 2022550882591008. Its totient is φ = 288921801080640.

The previous prime is 866786462176093. The next prime is 866786462176199. The reversal of 866786462176164 is 461671264687668.

It is a super-2 number, since 2×866786462176164² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 866786462176164.

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 7 ways as a sum of consecutive naturals, for example, 876941082 + ... + 877928945.

It is an arithmetic number, because the mean of its divisors is an integer number (84272953441292).

Almost surely, 2^{866786462176164} is an apocalyptic number.

It is an amenable number.

866786462176164 is an abundant number, since it is smaller than the sum of its proper divisors (1155764420414844).

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

866786462176164 is a wasteful number, since it uses less digits than its factorization.

866786462176164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754911195 (or 1754911193 counting only the distinct ones).

The product of its digits is 4682022912, while the sum is 78.

The spelling of 866786462176164 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred sixty-two million, one hundred seventy-six thousand, one hundred sixty-four".