128163540103 has 4 divisors (see below), whose sum is σ = 128639984760. Its totient is φ = 127687095448.

The previous prime is 128163540097. The next prime is 128163540119. The reversal of 128163540103 is 301045361821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301045361821 = 631 ⋅477092491.

It is a cyclic number.

It is not a de Polignac number, because 128163540103 - 2²⁵ = 128129985671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128163540203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238221925 + ... + 238222462.

It is an arithmetic number, because the mean of its divisors is an integer number (32159996190).

Almost surely, 2^128163540103 is an apocalyptic number.

128163540103 is a deficient number, since it is larger than the sum of its proper divisors (476444657).

128163540103 is an equidigital number, since it uses as much as digits as its factorization.

128163540103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476444656.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 128163540103 in words is "one hundred twenty-eight billion, one hundred sixty-three million, five hundred forty thousand, one hundred three".