1681555334183 has 2 divisors, whose sum is σ = 1681555334184. Its totient is φ = 1681555334182.

The previous prime is 1681555334159. The next prime is 1681555334219. The reversal of 1681555334183 is 3814335551861.

It is a weak prime.

It is an emirp because it is prime and its reverse (3814335551861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1681555334183 - 2³⁶ = 1612835857447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1681555334383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840777667091 + 840777667092.

It is an arithmetic number, because the mean of its divisors is an integer number (840777667092).

Almost surely, 2^{1681555334183} is an apocalyptic number.

1681555334183 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681555334183 is an equidigital number, since it uses as much as digits as its factorization.

1681555334183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184000, while the sum is 53.

The spelling of 1681555334183 in words is "one trillion, six hundred eighty-one billion, five hundred fifty-five million, three hundred thirty-four thousand, one hundred eighty-three".