128116799 has 2 divisors, whose sum is σ = 128116800. Its totient is φ = 128116798.

The previous prime is 128116787. The next prime is 128116817. The reversal of 128116799 is 997611821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128116799 - 2⁸ = 128116543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128116099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64058399 + 64058400.

It is an arithmetic number, because the mean of its divisors is an integer number (64058400).

Almost surely, 2^128116799 is an apocalyptic number.

128116799 is a deficient number, since it is larger than the sum of its proper divisors (1).

128116799 is an equidigital number, since it uses as much as digits as its factorization.

128116799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 44.

The square root of 128116799 is about 11318.8691572966. The cubic root of 128116799 is about 504.1216624385.

The spelling of 128116799 in words is "one hundred twenty-eight million, one hundred sixteen thousand, seven hundred ninety-nine".