128306725213 has 2 divisors, whose sum is σ = 128306725214. Its totient is φ = 128306725212.

The previous prime is 128306725193. The next prime is 128306725219. The reversal of 128306725213 is 312527603821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127304812804 + 1001912409 = 356798^2 + 31653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128306725213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128306725219) 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, 64153362606 + 64153362607.

It is an arithmetic number, because the mean of its divisors is an integer number (64153362607).

Almost surely, 2^128306725213 is an apocalyptic number.

It is an amenable number.

128306725213 is a deficient number, since it is larger than the sum of its proper divisors (1).

128306725213 is an equidigital number, since it uses as much as digits as its factorization.

128306725213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 128306725213 in words is "one hundred twenty-eight billion, three hundred six million, seven hundred twenty-five thousand, two hundred thirteen".