128740793836139 has 2 divisors, whose sum is σ = 128740793836140. Its totient is φ = 128740793836138.

The previous prime is 128740793836099. The next prime is 128740793836157. The reversal of 128740793836139 is 931638397047821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128740793836139 - 2³⁶ = 128672074359403 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (128740793830139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64370396918069 + 64370396918070.

It is an arithmetic number, because the mean of its divisors is an integer number (64370396918070).

Almost surely, 2^{128740793836139} is an apocalyptic number.

128740793836139 is a deficient number, since it is larger than the sum of its proper divisors (1).

128740793836139 is an equidigital number, since it uses as much as digits as its factorization.

128740793836139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329204736, while the sum is 71.

The spelling of 128740793836139 in words is "one hundred twenty-eight trillion, seven hundred forty billion, seven hundred ninety-three million, eight hundred thirty-six thousand, one hundred thirty-nine".