128879564713 has 2 divisors, whose sum is σ = 128879564714. Its totient is φ = 128879564712.

The previous prime is 128879564699. The next prime is 128879564717. The reversal of 128879564713 is 317465978821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126937576089 + 1941988624 = 356283^2 + 44068^2 .

It is an emirp because it is prime and its reverse (317465978821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128879564713 - 2³³ = 120289630121 is a prime.

It is a super-2 number, since 2×128879564713² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128879564717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64439782356 + 64439782357.

It is an arithmetic number, because the mean of its divisors is an integer number (64439782357).

Almost surely, 2^128879564713 is an apocalyptic number.

It is an amenable number.

128879564713 is a deficient number, since it is larger than the sum of its proper divisors (1).

128879564713 is an equidigital number, since it uses as much as digits as its factorization.

128879564713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 61.

The spelling of 128879564713 in words is "one hundred twenty-eight billion, eight hundred seventy-nine million, five hundred sixty-four thousand, seven hundred thirteen".