128341722973 has 2 divisors, whose sum is σ = 128341722974. Its totient is φ = 128341722972.

The previous prime is 128341722967. The next prime is 128341722983. The reversal of 128341722973 is 379227143821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77571719289 + 50770003684 = 278517^2 + 225322^2 .

It is a cyclic number.

It is not a de Polignac number, because 128341722973 - 2⁵ = 128341722941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128341722923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64170861486 + 64170861487.

It is an arithmetic number, because the mean of its divisors is an integer number (64170861487).

Almost surely, 2^128341722973 is an apocalyptic number.

It is an amenable number.

128341722973 is a deficient number, since it is larger than the sum of its proper divisors (1).

128341722973 is an equidigital number, since it uses as much as digits as its factorization.

128341722973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The spelling of 128341722973 in words is "one hundred twenty-eight billion, three hundred forty-one million, seven hundred twenty-two thousand, nine hundred seventy-three".