128131736523 has 8 divisors (see below), whose sum is σ = 195248360448. Its totient is φ = 73218135144.

The previous prime is 128131736519. The next prime is 128131736543. The reversal of 128131736523 is 325637131821.

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

It is not a de Polignac number, because 128131736523 - 2² = 128131736519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128131736543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050755611 + ... + 3050755652.

It is an arithmetic number, because the mean of its divisors is an integer number (24406045056).

Almost surely, 2^128131736523 is an apocalyptic number.

128131736523 is a deficient number, since it is larger than the sum of its proper divisors (67116623925).

128131736523 is an equidigital number, since it uses as much as digits as its factorization.

128131736523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101511273.

The product of its digits is 181440, while the sum is 42.

The spelling of 128131736523 in words is "one hundred twenty-eight billion, one hundred thirty-one million, seven hundred thirty-six thousand, five hundred twenty-three".