127979271775 has 6 divisors (see below), whose sum is σ = 158694297032. Its totient is φ = 102383417400.

The previous prime is 127979271697. The next prime is 127979271779. The reversal of 127979271775 is 577172979721.

It is not a de Polignac number, because 127979271775 - 2⁹ = 127979271263 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 (127979271779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2559585411 + ... + 2559585460.

Almost surely, 2^127979271775 is an apocalyptic number.

127979271775 is a deficient number, since it is larger than the sum of its proper divisors (30715025257).

127979271775 is an equidigital number, since it uses as much as digits as its factorization.

127979271775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119170881 (or 5119170876 counting only the distinct ones).

The product of its digits is 27227340, while the sum is 64.

The spelling of 127979271775 in words is "one hundred twenty-seven billion, nine hundred seventy-nine million, two hundred seventy-one thousand, seven hundred seventy-five".