866441063342163 has 4 divisors (see below), whose sum is σ = 1155254751122888. Its totient is φ = 577627375561440.

The previous prime is 866441063342147. The next prime is 866441063342237. The reversal of 866441063342163 is 361243360144668.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 866441063342163 - 2⁴ = 866441063342147 is a prime.

It is a super-2 number, since 2×866441063342163² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866441063342263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144406843890358 + ... + 144406843890363.

It is an arithmetic number, because the mean of its divisors is an integer number (288813687780722).

Almost surely, 2^{866441063342163} is an apocalyptic number.

866441063342163 is a deficient number, since it is larger than the sum of its proper divisors (288813687780725).

866441063342163 is a wasteful number, since it uses less digits than its factorization.

866441063342163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288813687780724.

The product of its (nonzero) digits is 35831808, while the sum is 57.

The spelling of 866441063342163 in words is "eight hundred sixty-six trillion, four hundred forty-one billion, sixty-three million, three hundred forty-two thousand, one hundred sixty-three".