126555346642177 has 2 divisors, whose sum is σ = 126555346642178. Its totient is φ = 126555346642176.

The previous prime is 126555346642129. The next prime is 126555346642271. The reversal of 126555346642177 is 771246643555621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87985731965041 + 38569614677136 = 9380071^2 + 6210444^2 .

It is a cyclic number.

It is not a de Polignac number, because 126555346642177 - 2²³ = 126555338253569 is a prime.

It is not a weakly prime, because it can be changed into another prime (126550346642177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63277673321088 + 63277673321089.

It is an arithmetic number, because the mean of its divisors is an integer number (63277673321089).

Almost surely, 2^{126555346642177} is an apocalyptic number.

It is an amenable number.

126555346642177 is a deficient number, since it is larger than the sum of its proper divisors (1).

126555346642177 is an equidigital number, since it uses as much as digits as its factorization.

126555346642177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016000, while the sum is 64.

The spelling of 126555346642177 in words is "one hundred twenty-six trillion, five hundred fifty-five billion, three hundred forty-six million, six hundred forty-two thousand, one hundred seventy-seven".