127743123077 has 2 divisors, whose sum is σ = 127743123078. Its totient is φ = 127743123076.

The previous prime is 127743123071. The next prime is 127743123119. The reversal of 127743123077 is 770321347721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111556668001 + 16186455076 = 334001^2 + 127226^2 .

It is a cyclic number.

It is not a de Polignac number, because 127743123077 - 2²⁸ = 127474687621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127743123071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63871561538 + 63871561539.

It is an arithmetic number, because the mean of its divisors is an integer number (63871561539).

Almost surely, 2^127743123077 is an apocalyptic number.

It is an amenable number.

127743123077 is a deficient number, since it is larger than the sum of its proper divisors (1).

127743123077 is an equidigital number, since it uses as much as digits as its factorization.

127743123077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345744, while the sum is 44.

The spelling of 127743123077 in words is "one hundred twenty-seven billion, seven hundred forty-three million, one hundred twenty-three thousand, seventy-seven".