128126077127 has 2 divisors, whose sum is σ = 128126077128. Its totient is φ = 128126077126.

The previous prime is 128126077019. The next prime is 128126077141. The reversal of 128126077127 is 721770621821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128126077127 - 2¹⁴ = 128126060743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128126071127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64063038563 + 64063038564.

It is an arithmetic number, because the mean of its divisors is an integer number (64063038564).

Almost surely, 2^128126077127 is an apocalyptic number.

128126077127 is a deficient number, since it is larger than the sum of its proper divisors (1).

128126077127 is an equidigital number, since it uses as much as digits as its factorization.

128126077127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 44.

Adding to 128126077127 its reverse (721770621821), we get a palindrome (849896698948).

The spelling of 128126077127 in words is "one hundred twenty-eight billion, one hundred twenty-six million, seventy-seven thousand, one hundred twenty-seven".