128711505103 has 2 divisors, whose sum is σ = 128711505104. Its totient is φ = 128711505102.

The previous prime is 128711505061. The next prime is 128711505113. The reversal of 128711505103 is 301505117821.

It is a strong prime.

It is an emirp because it is prime and its reverse (301505117821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128711505103 - 2⁹ = 128711504591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128711505113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64355752551 + 64355752552.

It is an arithmetic number, because the mean of its divisors is an integer number (64355752552).

Almost surely, 2^128711505103 is an apocalyptic number.

128711505103 is a deficient number, since it is larger than the sum of its proper divisors (1).

128711505103 is an equidigital number, since it uses as much as digits as its factorization.

128711505103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 34.

The spelling of 128711505103 in words is "one hundred twenty-eight billion, seven hundred eleven million, five hundred five thousand, one hundred three".