1428685885129 has 2 divisors, whose sum is σ = 1428685885130. Its totient is φ = 1428685885128.

The previous prime is 1428685885117. The next prime is 1428685885163. The reversal of 1428685885129 is 9215885868241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1228823241529 + 199862643600 = 1108523^2 + 447060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428685885129 - 2⁵ = 1428685885097 is a prime.

It is a super-2 number, since 2×1428685885129² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1428685885189) 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, 714342942564 + 714342942565.

It is an arithmetic number, because the mean of its divisors is an integer number (714342942565).

Almost surely, 2^{1428685885129} is an apocalyptic number.

It is an amenable number.

1428685885129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428685885129 is an equidigital number, since it uses as much as digits as its factorization.

1428685885129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88473600, while the sum is 67.

The spelling of 1428685885129 in words is "one trillion, four hundred twenty-eight billion, six hundred eighty-five million, eight hundred eighty-five thousand, one hundred twenty-nine".