128647000441 has 2 divisors, whose sum is σ = 128647000442. Its totient is φ = 128647000440.

The previous prime is 128647000379. The next prime is 128647000451. The reversal of 128647000441 is 144000746821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90738910441 + 37908090000 = 301229^2 + 194700^2 .

It is a cyclic number.

It is not a de Polignac number, because 128647000441 - 2²³ = 128638611833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128647000441.

It is not a weakly prime, because it can be changed into another prime (128647000451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64323500220 + 64323500221.

It is an arithmetic number, because the mean of its divisors is an integer number (64323500221).

Almost surely, 2^128647000441 is an apocalyptic number.

128647000441 is the 207081-st hex number.

It is an amenable number.

128647000441 is a deficient number, since it is larger than the sum of its proper divisors (1).

128647000441 is an equidigital number, since it uses as much as digits as its factorization.

128647000441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 128647000441 in words is "one hundred twenty-eight billion, six hundred forty-seven million, four hundred forty-one", and thus it is an aban number.