127044891881 has 8 divisors (see below), whose sum is σ = 128099578824. Its totient is φ = 125993312640.

The previous prime is 127044891871. The next prime is 127044891887. The reversal of 127044891881 is 188198440721.

It can be written as a sum of positive squares in 4 ways, for example, as 27703938025 + 99340953856 = 166445^2 + 315184^2 .

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 127044891881 - 2⁶ = 127044891817 is a prime.

It is a super-2 number, since 2×127044891881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127044891887) 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, 694790 + ... + 858383.

It is an arithmetic number, because the mean of its divisors is an integer number (16012447353).

Almost surely, 2^127044891881 is an apocalyptic number.

It is an amenable number.

127044891881 is a deficient number, since it is larger than the sum of its proper divisors (1054686943).

127044891881 is a wasteful number, since it uses less digits than its factorization.

127044891881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553851.

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 127044891881 in words is "one hundred twenty-seven billion, forty-four million, eight hundred ninety-one thousand, eight hundred eighty-one".