1428895978171 has 2 divisors, whose sum is σ = 1428895978172. Its totient is φ = 1428895978170.

The previous prime is 1428895978129. The next prime is 1428895978193. The reversal of 1428895978171 is 1718795988241.

It is a strong prime.

It is an emirp because it is prime and its reverse (1718795988241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1428895978171 - 2⁷ = 1428895978043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1428895978171.

It is not a weakly prime, because it can be changed into another prime (1428895978121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714447989085 + 714447989086.

It is an arithmetic number, because the mean of its divisors is an integer number (714447989086).

Almost surely, 2^{1428895978171} is an apocalyptic number.

1428895978171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428895978171 is an equidigital number, since it uses as much as digits as its factorization.

1428895978171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81285120, while the sum is 70.

The spelling of 1428895978171 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety-five million, nine hundred seventy-eight thousand, one hundred seventy-one".