128165372327 has 4 divisors (see below), whose sum is σ = 128488207416. Its totient is φ = 127842537240.

The previous prime is 128165372311. The next prime is 128165372389. The reversal of 128165372327 is 723273561821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128165372327 - 2⁴ = 128165372311 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 (128165372827) 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 3 ways as a sum of consecutive naturals, for example, 161416949 + ... + 161417742.

It is an arithmetic number, because the mean of its divisors is an integer number (32122051854).

Almost surely, 2^128165372327 is an apocalyptic number.

128165372327 is a deficient number, since it is larger than the sum of its proper divisors (322835089).

128165372327 is an equidigital number, since it uses as much as digits as its factorization.

128165372327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322835088.

The product of its digits is 846720, while the sum is 47.

The spelling of 128165372327 in words is "one hundred twenty-eight billion, one hundred sixty-five million, three hundred seventy-two thousand, three hundred twenty-seven".