127631083805 has 4 divisors (see below), whose sum is σ = 153157300572. Its totient is φ = 102104867040.

The previous prime is 127631083757. The next prime is 127631083813. The reversal of 127631083805 is 508380136721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 508380136721 = 127691 ⋅3981331.

It can be written as a sum of positive squares in 2 ways, for example, as 83108817796 + 44522266009 = 288286^2 + 211003^2 .

It is not a de Polignac number, because 127631083805 - 2²⁰ = 127630035229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 12763108376 + ... + 12763108385.

It is an arithmetic number, because the mean of its divisors is an integer number (38289325143).

Almost surely, 2^127631083805 is an apocalyptic number.

It is an amenable number.

127631083805 is a deficient number, since it is larger than the sum of its proper divisors (25526216767).

127631083805 is an equidigital number, since it uses as much as digits as its factorization.

127631083805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25526216766.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 127631083805 in words is "one hundred twenty-seven billion, six hundred thirty-one million, eighty-three thousand, eight hundred five".