128725368859 has 2 divisors, whose sum is σ = 128725368860. Its totient is φ = 128725368858.

The previous prime is 128725368799. The next prime is 128725368911. The reversal of 128725368859 is 958863527821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128725368859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128725368859.

It is not a weakly prime, because it can be changed into another prime (128725368559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64362684429 + 64362684430.

It is an arithmetic number, because the mean of its divisors is an integer number (64362684430).

Almost surely, 2^128725368859 is an apocalyptic number.

128725368859 is a deficient number, since it is larger than the sum of its proper divisors (1).

128725368859 is an equidigital number, since it uses as much as digits as its factorization.

128725368859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58060800, while the sum is 64.

The spelling of 128725368859 in words is "one hundred twenty-eight billion, seven hundred twenty-five million, three hundred sixty-eight thousand, eight hundred fifty-nine".