127868855569 has 12 divisors (see below), whose sum is σ = 160187358324. Its totient is φ = 101170962144.

The previous prime is 127868855539. The next prime is 127868855581. The reversal of 127868855569 is 965558868721.

It can be written as a sum of positive squares in 2 ways, for example, as 24707124225 + 103161731344 = 157185^2 + 321188^2 .

It is not a de Polignac number, because 127868855569 - 2¹³ = 127868847377 is a prime.

It is a super-2 number, since 2×127868855569² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 127868855498 and 127868855507.

It is not an unprimeable number, because it can be changed into a prime (127868855539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100367382 + ... + 100368655.

It is an arithmetic number, because the mean of its divisors is an integer number (13348946527).

Almost surely, 2^127868855569 is an apocalyptic number.

It is an amenable number.

127868855569 is a deficient number, since it is larger than the sum of its proper divisors (32318502755).

127868855569 is a wasteful number, since it uses less digits than its factorization.

127868855569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200736064 (or 200736057 counting only the distinct ones).

The product of its digits is 290304000, while the sum is 70.

The spelling of 127868855569 in words is "one hundred twenty-seven billion, eight hundred sixty-eight million, eight hundred fifty-five thousand, five hundred sixty-nine".