128700000017 has 2 divisors, whose sum is σ = 128700000018. Its totient is φ = 128700000016.

The previous prime is 128699999983. The next prime is 128700000043. The reversal of 128700000017 is 710000007821.

It is an a-pointer prime, because the next prime (128700000043) can be obtained adding 128700000017 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82019804881 + 46680195136 = 286391^2 + 216056^2 .

It is a cyclic number.

It is not a de Polignac number, because 128700000017 - 2¹⁰ = 128699998993 is a prime.

It is not a weakly prime, because it can be changed into another prime (128700000817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64350000008 + 64350000009.

It is an arithmetic number, because the mean of its divisors is an integer number (64350000009).

Almost surely, 2^128700000017 is an apocalyptic number.

It is an amenable number.

128700000017 is a deficient number, since it is larger than the sum of its proper divisors (1).

128700000017 is an equidigital number, since it uses as much as digits as its factorization.

128700000017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 26.

Adding to 128700000017 its reverse (710000007821), we get a palindrome (838700007838).

The spelling of 128700000017 in words is "one hundred twenty-eight billion, seven hundred million, seventeen", and thus it is an aban number.