128945053427 has 2 divisors, whose sum is σ = 128945053428. Its totient is φ = 128945053426.

The previous prime is 128945053417. The next prime is 128945053477. The reversal of 128945053427 is 724350549821.

It is an a-pointer prime, because the next prime (128945053477) can be obtained adding 128945053427 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128945053427 - 2¹⁰ = 128945052403 is a prime.

It is not a weakly prime, because it can be changed into another prime (128945053417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64472526713 + 64472526714.

It is an arithmetic number, because the mean of its divisors is an integer number (64472526714).

Almost surely, 2^128945053427 is an apocalyptic number.

128945053427 is a deficient number, since it is larger than the sum of its proper divisors (1).

128945053427 is an equidigital number, since it uses as much as digits as its factorization.

128945053427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 128945053427 in words is "one hundred twenty-eight billion, nine hundred forty-five million, fifty-three thousand, four hundred twenty-seven".