127847750857 has 4 divisors (see below), whose sum is σ = 132256294020. Its totient is φ = 123439207696.

The previous prime is 127847750813. The next prime is 127847750881. The reversal of 127847750857 is 758057748721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69772052736 + 58075698121 = 264144^2 + 240989^2 .

It is a cyclic number.

It is not a de Polignac number, because 127847750857 - 2¹⁹ = 127847226569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127847750795 and 127847750804.

It is not an unprimeable number, because it can be changed into a prime (127847750057) 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 3 ways as a sum of consecutive naturals, for example, 2204271538 + ... + 2204271595.

It is an arithmetic number, because the mean of its divisors is an integer number (33064073505).

Almost surely, 2^127847750857 is an apocalyptic number.

It is an amenable number.

127847750857 is a deficient number, since it is larger than the sum of its proper divisors (4408543163).

127847750857 is an equidigital number, since it uses as much as digits as its factorization.

127847750857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408543162.

The product of its (nonzero) digits is 30732800, while the sum is 61.

The spelling of 127847750857 in words is "one hundred twenty-seven billion, eight hundred forty-seven million, seven hundred fifty thousand, eight hundred fifty-seven".