128820333510413 has 2 divisors, whose sum is σ = 128820333510414. Its totient is φ = 128820333510412.

The previous prime is 128820333510353. The next prime is 128820333510437. The reversal of 128820333510413 is 314015333028821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103680007146244 + 25140326364169 = 10182338^2 + 5014013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128820333510413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128820333510443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64410166755206 + 64410166755207.

It is an arithmetic number, because the mean of its divisors is an integer number (64410166755207).

Almost surely, 2^{128820333510413} is an apocalyptic number.

It is an amenable number.

128820333510413 is a deficient number, since it is larger than the sum of its proper divisors (1).

128820333510413 is an equidigital number, since it uses as much as digits as its factorization.

128820333510413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 128820333510413 in words is "one hundred twenty-eight trillion, eight hundred twenty billion, three hundred thirty-three million, five hundred ten thousand, four hundred thirteen".