127631641427 has 4 divisors (see below), whose sum is σ = 127943699640. Its totient is φ = 127319583216.

The previous prime is 127631641391. The next prime is 127631641439. The reversal of 127631641427 is 724146136721.

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

It is a cyclic number.

It is not a de Polignac number, because 127631641427 - 2⁸ = 127631641171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127631641457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156028493 + ... + 156029310.

It is an arithmetic number, because the mean of its divisors is an integer number (31985924910).

Almost surely, 2^127631641427 is an apocalyptic number.

127631641427 is a deficient number, since it is larger than the sum of its proper divisors (312058213).

127631641427 is an equidigital number, since it uses as much as digits as its factorization.

127631641427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312058212.

The product of its digits is 338688, while the sum is 44.

The spelling of 127631641427 in words is "one hundred twenty-seven billion, six hundred thirty-one million, six hundred forty-one thousand, four hundred twenty-seven".