127717665211 has 2 divisors, whose sum is σ = 127717665212. Its totient is φ = 127717665210.

The previous prime is 127717665197. The next prime is 127717665227. The reversal of 127717665211 is 112566717721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127717665211 - 2¹³ = 127717657019 is a prime.

It is not a weakly prime, because it can be changed into another prime (127717665511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63858832605 + 63858832606.

It is an arithmetic number, because the mean of its divisors is an integer number (63858832606).

Almost surely, 2^127717665211 is an apocalyptic number.

127717665211 is a deficient number, since it is larger than the sum of its proper divisors (1).

127717665211 is an equidigital number, since it uses as much as digits as its factorization.

127717665211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 46.

The spelling of 127717665211 in words is "one hundred twenty-seven billion, seven hundred seventeen million, six hundred sixty-five thousand, two hundred eleven".