127438516771 has 8 divisors (see below), whose sum is σ = 132988605984. Its totient is φ = 121889201280.

The previous prime is 127438516747. The next prime is 127438516813. The reversal of 127438516771 is 177615834721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127438516771 - 2³³ = 118848582179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127438516171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156661 + ... + 528601.

It is an arithmetic number, because the mean of its divisors is an integer number (16623575748).

Almost surely, 2^127438516771 is an apocalyptic number.

127438516771 is a deficient number, since it is larger than the sum of its proper divisors (5550089213).

127438516771 is a wasteful number, since it uses less digits than its factorization.

127438516771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386861.

The product of its digits is 1975680, while the sum is 52.

The spelling of 127438516771 in words is "one hundred twenty-seven billion, four hundred thirty-eight million, five hundred sixteen thousand, seven hundred seventy-one".