127881276913 has 8 divisors (see below), whose sum is σ = 138017042856. Its totient is φ = 117788188800.

The previous prime is 127881276907. The next prime is 127881276923. The reversal of 127881276913 is 319672188721.

It can be written as a sum of positive squares in 4 ways, for example, as 183683809 + 127697593104 = 13553^2 + 357348^2 .

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 127881276913 - 2⁵ = 127881276881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127881276923) 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, 10663228 + ... + 10675213.

It is an arithmetic number, because the mean of its divisors is an integer number (17252130357).

Almost surely, 2^127881276913 is an apocalyptic number.

127881276913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

127881276913 is a deficient number, since it is larger than the sum of its proper divisors (10135765943).

127881276913 is a wasteful number, since it uses less digits than its factorization.

127881276913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21338915.

The product of its digits is 2032128, while the sum is 55.

The spelling of 127881276913 in words is "one hundred twenty-seven billion, eight hundred eighty-one million, two hundred seventy-six thousand, nine hundred thirteen".