8136866161863 has 24 divisors (see below), whose sum is σ = 11781307319600. Its totient is φ = 5411630373120.

The previous prime is 8136866161799. The next prime is 8136866161883. The reversal of 8136866161863 is 3681616686318.

8136866161863 is a `hidden beast` number, since 8 + 1 + 3 + 6 + 8 + 6 + 6 + 1 + 618 + 6 + 3 = 666.

It is not a de Polignac number, because 8136866161863 - 2⁶ = 8136866161799 is a prime.

It is a super-2 number, since 2×8136866161863² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8136866161863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8136866161883) 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 23 ways as a sum of consecutive naturals, for example, 55064868 + ... + 55212438.

Almost surely, 2^{8136866161863} is an apocalyptic number.

8136866161863 is a deficient number, since it is larger than the sum of its proper divisors (3644441157737).

8136866161863 is a wasteful number, since it uses less digits than its factorization.

8136866161863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162159 (or 162156 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 8136866161863 in words is "eight trillion, one hundred thirty-six billion, eight hundred sixty-six million, one hundred sixty-one thousand, eight hundred sixty-three".