128003173557241 has 2 divisors, whose sum is σ = 128003173557242. Its totient is φ = 128003173557240.

The previous prime is 128003173557221. The next prime is 128003173557251. The reversal of 128003173557241 is 142755371300821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119443915321600 + 8559258235641 = 10929040^2 + 2925621^2 .

It is a cyclic number.

It is not a de Polignac number, because 128003173557241 - 2⁵ = 128003173557209 is a prime.

It is not a weakly prime, because it can be changed into another prime (128003173557221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64001586778620 + 64001586778621.

It is an arithmetic number, because the mean of its divisors is an integer number (64001586778621).

Almost surely, 2^{128003173557241} is an apocalyptic number.

It is an amenable number.

128003173557241 is a deficient number, since it is larger than the sum of its proper divisors (1).

128003173557241 is an equidigital number, since it uses as much as digits as its factorization.

128003173557241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 128003173557241 in words is "one hundred twenty-eight trillion, three billion, one hundred seventy-three million, five hundred fifty-seven thousand, two hundred forty-one".