163107128081 has 8 divisors (see below), whose sum is σ = 164646397440. Its totient is φ = 161568134928.

The previous prime is 163107128071. The next prime is 163107128101. The reversal of 163107128081 is 180821701361.

It is a happy number.

163107128081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163107128081 is a prime.

It is a super-2 number, since 2×163107128081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163107128071) 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 7 ways as a sum of consecutive naturals, for example, 1232720 + ... + 1358606.

It is an arithmetic number, because the mean of its divisors is an integer number (20580799680).

Almost surely, 2^163107128081 is an apocalyptic number.

It is an amenable number.

163107128081 is a deficient number, since it is larger than the sum of its proper divisors (1539269359).

163107128081 is a wasteful number, since it uses less digits than its factorization.

163107128081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138103.

The product of its (nonzero) digits is 16128, while the sum is 38.

The spelling of 163107128081 in words is "one hundred sixty-three billion, one hundred seven million, one hundred twenty-eight thousand, eighty-one".