163868470865 has 16 divisors (see below), whose sum is σ = 215103271680. Its totient is φ = 118852321920.

The previous prime is 163868470849. The next prime is 163868470877. The reversal of 163868470865 is 568074868361.

It is not a de Polignac number, because 163868470865 - 2⁴ = 163868470849 is a prime.

It is a super-3 number, since 3×163868470865³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163868470798 and 163868470807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4038980 + ... + 4079349.

It is an arithmetic number, because the mean of its divisors is an integer number (13443954480).

Almost surely, 2^163868470865 is an apocalyptic number.

It is an amenable number.

163868470865 is a deficient number, since it is larger than the sum of its proper divisors (51234800815).

163868470865 is a wasteful number, since it uses less digits than its factorization.

163868470865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118712.

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 163868470865 in words is "one hundred sixty-three billion, eight hundred sixty-eight million, four hundred seventy thousand, eight hundred sixty-five".