2668081373 has 2 divisors, whose sum is σ = 2668081374. Its totient is φ = 2668081372.

The previous prime is 2668081319. The next prime is 2668081387. The reversal of 2668081373 is 3731808662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2276912089 + 391169284 = 47717^2 + 19778^2 .

It is a cyclic number.

It is not a de Polignac number, because 2668081373 - 2¹⁸ = 2667819229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2668081873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334040686 + 1334040687.

It is an arithmetic number, because the mean of its divisors is an integer number (1334040687).

Almost surely, 2^2668081373 is an apocalyptic number.

It is an amenable number.

2668081373 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668081373 is an equidigital number, since it uses as much as digits as its factorization.

2668081373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 2668081373 is about 51653.4739683596. The cubic root of 2668081373 is about 1386.9677309953.

The spelling of 2668081373 in words is "two billion, six hundred sixty-eight million, eighty-one thousand, three hundred seventy-three".