128805097273 has 2 divisors, whose sum is σ = 128805097274. Its totient is φ = 128805097272.

The previous prime is 128805097243. The next prime is 128805097321. The reversal of 128805097273 is 372790508821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117602356624 + 11202740649 = 342932^2 + 105843^2 .

It is a cyclic number.

It is not a de Polignac number, because 128805097273 - 2⁵ = 128805097241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128805097273.

It is not a weakly prime, because it can be changed into another prime (128805097243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64402548636 + 64402548637.

It is an arithmetic number, because the mean of its divisors is an integer number (64402548637).

Almost surely, 2^128805097273 is an apocalyptic number.

It is an amenable number.

128805097273 is a deficient number, since it is larger than the sum of its proper divisors (1).

128805097273 is an equidigital number, since it uses as much as digits as its factorization.

128805097273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 128805097273 in words is "one hundred twenty-eight billion, eight hundred five million, ninety-seven thousand, two hundred seventy-three".