163868470866 has 12 divisors (see below), whose sum is σ = 355048353582. Its totient is φ = 54622823616.

The previous prime is 163868470849. The next prime is 163868470877. The reversal of 163868470866 is 668074868361.

163868470866 is a `hidden beast` number, since 1 + 6 + 3 + 86 + 8 + 470 + 86 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 156713848641 + 7154622225 = 395871^2 + 84585^2 .

It is a super-2 number, since 2×163868470866² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4551901951 + ... + 4551901986.

Almost surely, 2^163868470866 is an apocalyptic number.

163868470866 is an abundant number, since it is smaller than the sum of its proper divisors (191179882716).

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

163868470866 is a wasteful number, since it uses less digits than its factorization.

163868470866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9103803945 (or 9103803942 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 63.

The spelling of 163868470866 in words is "one hundred sixty-three billion, eight hundred sixty-eight million, four hundred seventy thousand, eight hundred sixty-six".