127301140647217 has 2 divisors, whose sum is σ = 127301140647218. Its totient is φ = 127301140647216.

The previous prime is 127301140647211. The next prime is 127301140647253. The reversal of 127301140647217 is 712746041103721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88547328381681 + 38753812265536 = 9409959^2 + 6225256^2 .

It is an emirp because it is prime and its reverse (712746041103721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127301140647217 is a prime.

It is not a weakly prime, because it can be changed into another prime (127301140647211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63650570323608 + 63650570323609.

It is an arithmetic number, because the mean of its divisors is an integer number (63650570323609).

Almost surely, 2^{127301140647217} is an apocalyptic number.

It is an amenable number.

127301140647217 is a deficient number, since it is larger than the sum of its proper divisors (1).

127301140647217 is an equidigital number, since it uses as much as digits as its factorization.

127301140647217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 127301140647217 in words is "one hundred twenty-seven trillion, three hundred one billion, one hundred forty million, six hundred forty-seven thousand, two hundred seventeen".