1428705909899 has 8 divisors (see below), whose sum is σ = 1502200675920. Its totient is φ = 1356826413600.

The previous prime is 1428705909871. The next prime is 1428705909907. The reversal of 1428705909899 is 9989095078241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1428705909899 - 2⁸ = 1428705909643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428705909859) 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 in 7 ways as a sum of consecutive naturals, for example, 403815617 + ... + 403819154.

It is an arithmetic number, because the mean of its divisors is an integer number (187775084490).

Almost surely, 2^{1428705909899} is an apocalyptic number.

1428705909899 is a deficient number, since it is larger than the sum of its proper divisors (73494766021).

1428705909899 is an equidigital number, since it uses as much as digits as its factorization.

1428705909899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807634861.

The product of its (nonzero) digits is 117573120, while the sum is 71.

The spelling of 1428705909899 in words is "one trillion, four hundred twenty-eight billion, seven hundred five million, nine hundred nine thousand, eight hundred ninety-nine".