1683353668685 has 16 divisors (see below), whose sum is σ = 2199853721520. Its totient is φ = 1229124610560.

The previous prime is 1683353668637. The next prime is 1683353668727. The reversal of 1683353668685 is 5868663533861.

It can be written as a sum of positive squares in 8 ways, for example, as 689276871529 + 994076797156 = 830227^2 + 997034^2 .

It is not a de Polignac number, because 1683353668685 - 2⁶ = 1683353668621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145487186 + ... + 145498755.

It is an arithmetic number, because the mean of its divisors is an integer number (137490857595).

Almost surely, 2^{1683353668685} is an apocalyptic number.

It is an amenable number.

1683353668685 is a deficient number, since it is larger than the sum of its proper divisors (516500052835).

1683353668685 is a wasteful number, since it uses less digits than its factorization.

1683353668685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290986048.

The product of its digits is 447897600, while the sum is 68.

The spelling of 1683353668685 in words is "one trillion, six hundred eighty-three billion, three hundred fifty-three million, six hundred sixty-eight thousand, six hundred eighty-five".