127226708865 has 24 divisors (see below), whose sum is σ = 220626118440. Its totient is φ = 67823529984.

The previous prime is 127226708827. The next prime is 127226708899. The reversal of 127226708865 is 568807622721.

It can be written as a sum of positive squares in 4 ways, for example, as 42852726081 + 84373982784 = 207009^2 + 290472^2 .

It is not a de Polignac number, because 127226708865 - 2¹² = 127226704769 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 539200 + ... + 738369.

It is an arithmetic number, because the mean of its divisors is an integer number (9192754935).

Almost surely, 2^127226708865 is an apocalyptic number.

127226708865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127226708865 is a deficient number, since it is larger than the sum of its proper divisors (93399409575).

127226708865 is a wasteful number, since it uses less digits than its factorization.

127226708865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279793 (or 1279790 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 127226708865 in words is "one hundred twenty-seven billion, two hundred twenty-six million, seven hundred eight thousand, eight hundred sixty-five".