1681284828323 has 4 divisors (see below), whose sum is σ = 1684709034168. Its totient is φ = 1677860622480.

The previous prime is 1681284828317. The next prime is 1681284828331. The reversal of 1681284828323 is 3238284821861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1681284828323 - 2⁶ = 1681284828259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681284828373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712102186 + ... + 1712103167.

It is an arithmetic number, because the mean of its divisors is an integer number (421177258542).

Almost surely, 2^{1681284828323} is an apocalyptic number.

1681284828323 is a deficient number, since it is larger than the sum of its proper divisors (3424205845).

1681284828323 is an equidigital number, since it uses as much as digits as its factorization.

1681284828323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424205844.

The product of its digits is 7077888, while the sum is 56.

The spelling of 1681284828323 in words is "one trillion, six hundred eighty-one billion, two hundred eighty-four million, eight hundred twenty-eight thousand, three hundred twenty-three".