127970749671 has 4 divisors (see below), whose sum is σ = 170627666232. Its totient is φ = 85313833112.

The previous prime is 127970749657. The next prime is 127970749679. The reversal of 127970749671 is 176947079721.

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 127970749671 - 2¹⁵ = 127970716903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127970749679) 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, 21328458276 + ... + 21328458281.

It is an arithmetic number, because the mean of its divisors is an integer number (42656916558).

Almost surely, 2^127970749671 is an apocalyptic number.

127970749671 is a deficient number, since it is larger than the sum of its proper divisors (42656916561).

127970749671 is an equidigital number, since it uses as much as digits as its factorization.

127970749671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42656916560.

The product of its (nonzero) digits is 9335088, while the sum is 60.

The spelling of 127970749671 in words is "one hundred twenty-seven billion, nine hundred seventy million, seven hundred forty-nine thousand, six hundred seventy-one".