127881801117 has 12 divisors (see below), whose sum is σ = 211106465440. Its totient is φ = 73075314888.

The previous prime is 127881801083. The next prime is 127881801119. The reversal of 127881801117 is 711108188721.

It is not a de Polignac number, because 127881801117 - 2⁸ = 127881800861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127881801119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1014934867 + ... + 1014934992.

Almost surely, 2^127881801117 is an apocalyptic number.

It is an amenable number.

127881801117 is a deficient number, since it is larger than the sum of its proper divisors (83224664323).

127881801117 is a wasteful number, since it uses less digits than its factorization.

127881801117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029869872 (or 2029869869 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 45.

Adding to 127881801117 its reverse (711108188721), we get a palindrome (838989989838).

The spelling of 127881801117 in words is "one hundred twenty-seven billion, eight hundred eighty-one million, eight hundred one thousand, one hundred seventeen".