128188038001 has 4 divisors (see below), whose sum is σ = 128188826100. Its totient is φ = 128187249904.

The previous prime is 128188037987. The next prime is 128188038091. The reversal of 128188038001 is 100830881821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 47994293776 + 80193744225 = 219076^2 + 283185^2 .

It is a cyclic number.

It is not a de Polignac number, because 128188038001 - 2¹¹ = 128188035953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128188038091) 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, 49846 + ... + 508783.

It is an arithmetic number, because the mean of its divisors is an integer number (32047206525).

Almost surely, 2^128188038001 is an apocalyptic number.

It is an amenable number.

128188038001 is a deficient number, since it is larger than the sum of its proper divisors (788099).

128188038001 is an equidigital number, since it uses as much as digits as its factorization.

128188038001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788098.

The product of its (nonzero) digits is 24576, while the sum is 40.

The spelling of 128188038001 in words is "one hundred twenty-eight billion, one hundred eighty-eight million, thirty-eight thousand, one".