1428811999427 has 2 divisors, whose sum is σ = 1428811999428. Its totient is φ = 1428811999426.

The previous prime is 1428811999421. The next prime is 1428811999501. The reversal of 1428811999427 is 7249991188241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428811999427 - 2²² = 1428807805123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428811999421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714405999713 + 714405999714.

It is an arithmetic number, because the mean of its divisors is an integer number (714405999714).

Almost surely, 2^{1428811999427} is an apocalyptic number.

1428811999427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428811999427 is an equidigital number, since it uses as much as digits as its factorization.

1428811999427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 65.

The spelling of 1428811999427 in words is "one trillion, four hundred twenty-eight billion, eight hundred eleven million, nine hundred ninety-nine thousand, four hundred twenty-seven".