127134273511681 has 16 divisors (see below), whose sum is σ = 132463270010880. Its totient is φ = 121882044367440.

The previous prime is 127134273511649. The next prime is 127134273511717. The reversal of 127134273511681 is 186115372431721.

It is a cyclic number.

It is not a de Polignac number, because 127134273511681 - 2⁵ = 127134273511649 is a prime.

It is a super-2 number, since 2×127134273511681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127134273511621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511221090 + ... + 511469716.

It is an arithmetic number, because the mean of its divisors is an integer number (8278954375680).

Almost surely, 2^{127134273511681} is an apocalyptic number.

It is an amenable number.

127134273511681 is a deficient number, since it is larger than the sum of its proper divisors (5328996499199).

127134273511681 is a wasteful number, since it uses less digits than its factorization.

127134273511681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402924.

The product of its digits is 1693440, while the sum is 52.

The spelling of 127134273511681 in words is "one hundred twenty-seven trillion, one hundred thirty-four billion, two hundred seventy-three million, five hundred eleven thousand, six hundred eighty-one".