128813149619899 has 2 divisors, whose sum is σ = 128813149619900. Its totient is φ = 128813149619898.

The previous prime is 128813149619851. The next prime is 128813149619929. The reversal of 128813149619899 is 998916941318821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128813149619899 - 2¹¹ = 128813149617851 is a prime.

It is not a weakly prime, because it can be changed into another prime (128813149617899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64406574809949 + 64406574809950.

It is an arithmetic number, because the mean of its divisors is an integer number (64406574809950).

Almost surely, 2^{128813149619899} is an apocalyptic number.

128813149619899 is a deficient number, since it is larger than the sum of its proper divisors (1).

128813149619899 is an equidigital number, since it uses as much as digits as its factorization.

128813149619899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483729408, while the sum is 79.

The spelling of 128813149619899 in words is "one hundred twenty-eight trillion, eight hundred thirteen billion, one hundred forty-nine million, six hundred nineteen thousand, eight hundred ninety-nine".