127618818101 has 2 divisors, whose sum is σ = 127618818102. Its totient is φ = 127618818100.

The previous prime is 127618818091. The next prime is 127618818109. The reversal of 127618818101 is 101818816721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122521000900 + 5097817201 = 350030^2 + 71399^2 .

It is an emirp because it is prime and its reverse (101818816721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127618818101 - 2⁶ = 127618818037 is a prime.

It is a super-2 number, since 2×127618818101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127618818109) 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 as a sum of consecutive naturals, namely, 63809409050 + 63809409051.

It is an arithmetic number, because the mean of its divisors is an integer number (63809409051).

Almost surely, 2^127618818101 is an apocalyptic number.

It is an amenable number.

127618818101 is a deficient number, since it is larger than the sum of its proper divisors (1).

127618818101 is an equidigital number, since it uses as much as digits as its factorization.

127618818101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 44.

The spelling of 127618818101 in words is "one hundred twenty-seven billion, six hundred eighteen million, eight hundred eighteen thousand, one hundred one".