128756330411281 has 2 divisors, whose sum is σ = 128756330411282. Its totient is φ = 128756330411280.

The previous prime is 128756330411231. The next prime is 128756330411321. The reversal of 128756330411281 is 182114033657821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104030126634256 + 24726203777025 = 10199516^2 + 4972545^2 .

It is a cyclic number.

It is not a de Polignac number, because 128756330411281 - 2³³ = 128747740476689 is a prime.

It is a super-2 number, since 2×128756330411281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128756330411231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64378165205640 + 64378165205641.

It is an arithmetic number, because the mean of its divisors is an integer number (64378165205641).

Almost surely, 2^{128756330411281} is an apocalyptic number.

It is an amenable number.

128756330411281 is a deficient number, since it is larger than the sum of its proper divisors (1).

128756330411281 is an equidigital number, since it uses as much as digits as its factorization.

128756330411281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 128756330411281 in words is "one hundred twenty-eight trillion, seven hundred fifty-six billion, three hundred thirty million, four hundred eleven thousand, two hundred eighty-one".