128316204168947 has 2 divisors, whose sum is σ = 128316204168948. Its totient is φ = 128316204168946.

The previous prime is 128316204168931. The next prime is 128316204168991. The reversal of 128316204168947 is 749861402613821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128316204168947 - 2⁴ = 128316204168931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128316204168947.

It is not a weakly prime, because it can be changed into another prime (128316204168907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64158102084473 + 64158102084474.

It is an arithmetic number, because the mean of its divisors is an integer number (64158102084474).

Almost surely, 2^{128316204168947} is an apocalyptic number.

128316204168947 is a deficient number, since it is larger than the sum of its proper divisors (1).

128316204168947 is an equidigital number, since it uses as much as digits as its factorization.

128316204168947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27869184, while the sum is 62.

The spelling of 128316204168947 in words is "one hundred twenty-eight trillion, three hundred sixteen billion, two hundred four million, one hundred sixty-eight thousand, nine hundred forty-seven".