2666091171743 has 2 divisors, whose sum is σ = 2666091171744. Its totient is φ = 2666091171742.

The previous prime is 2666091171719. The next prime is 2666091171749. The reversal of 2666091171743 is 3471711906662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2666091171743 - 2³² = 2661796204447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666091171749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333045585871 + 1333045585872.

It is an arithmetic number, because the mean of its divisors is an integer number (1333045585872).

Almost surely, 2^{2666091171743} is an apocalyptic number.

2666091171743 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666091171743 is an equidigital number, since it uses as much as digits as its factorization.

2666091171743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 2666091171743 in words is "two trillion, six hundred sixty-six billion, ninety-one million, one hundred seventy-one thousand, seven hundred forty-three".