128247882727 has 4 divisors (see below), whose sum is σ = 130350307096. Its totient is φ = 126145458360.

The previous prime is 128247882671. The next prime is 128247882767. The reversal of 128247882727 is 727288742821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128247882727 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 (128247882767) 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 3 ways as a sum of consecutive naturals, for example, 1051212093 + ... + 1051212214.

It is an arithmetic number, because the mean of its divisors is an integer number (32587576774).

Almost surely, 2^128247882727 is an apocalyptic number.

128247882727 is a deficient number, since it is larger than the sum of its proper divisors (2102424369).

128247882727 is an equidigital number, since it uses as much as digits as its factorization.

128247882727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102424368.

The product of its digits is 11239424, while the sum is 58.

The spelling of 128247882727 in words is "one hundred twenty-eight billion, two hundred forty-seven million, eight hundred eighty-two thousand, seven hundred twenty-seven".