1666835183383 has 2 divisors, whose sum is σ = 1666835183384. Its totient is φ = 1666835183382.

The previous prime is 1666835183357. The next prime is 1666835183467. The reversal of 1666835183383 is 3833815386661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1666835183383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1666835183353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833417591691 + 833417591692.

It is an arithmetic number, because the mean of its divisors is an integer number (833417591692).

Almost surely, 2^{1666835183383} is an apocalyptic number.

1666835183383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1666835183383 is an equidigital number, since it uses as much as digits as its factorization.

1666835183383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44789760, while the sum is 61.

The spelling of 1666835183383 in words is "one trillion, six hundred sixty-six billion, eight hundred thirty-five million, one hundred eighty-three thousand, three hundred eighty-three".