128934813930679 has 2 divisors, whose sum is σ = 128934813930680. Its totient is φ = 128934813930678.

The previous prime is 128934813930623. The next prime is 128934813930731. The reversal of 128934813930679 is 976039318439821.

It is a strong prime.

It is an emirp because it is prime and its reverse (976039318439821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128934813930679 - 2¹⁷ = 128934813799607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128934813930079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64467406965339 + 64467406965340.

It is an arithmetic number, because the mean of its divisors is an integer number (64467406965340).

Almost surely, 2^{128934813930679} is an apocalyptic number.

128934813930679 is a deficient number, since it is larger than the sum of its proper divisors (1).

128934813930679 is an equidigital number, since it uses as much as digits as its factorization.

128934813930679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423263232, while the sum is 73.

The spelling of 128934813930679 in words is "one hundred twenty-eight trillion, nine hundred thirty-four billion, eight hundred thirteen million, nine hundred thirty thousand, six hundred seventy-nine".