1668755711783 has 2 divisors, whose sum is σ = 1668755711784. Its totient is φ = 1668755711782.

The previous prime is 1668755711699. The next prime is 1668755711801. The reversal of 1668755711783 is 3871175578661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1668755711783 - 2⁸ = 1668755711527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1668755713783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834377855891 + 834377855892.

It is an arithmetic number, because the mean of its divisors is an integer number (834377855892).

Almost surely, 2^{1668755711783} is an apocalyptic number.

1668755711783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668755711783 is an equidigital number, since it uses as much as digits as its factorization.

1668755711783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59270400, while the sum is 65.

The spelling of 1668755711783 in words is "one trillion, six hundred sixty-eight billion, seven hundred fifty-five million, seven hundred eleven thousand, seven hundred eighty-three".