2666126171 has 2 divisors, whose sum is σ = 2666126172. Its totient is φ = 2666126170.

The previous prime is 2666126149. The next prime is 2666126179. The reversal of 2666126171 is 1716216662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666126171 is a prime.

It is a super-2 number, since 2×2666126171² = 14216457519382242482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2666126179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333063085 + 1333063086.

It is an arithmetic number, because the mean of its divisors is an integer number (1333063086).

Almost surely, 2^2666126171 is an apocalyptic number.

2666126171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666126171 is an equidigital number, since it uses as much as digits as its factorization.

2666126171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 2666126171 is about 51634.5443574357. The cubic root of 2666126171 is about 1386.6288526796.

The spelling of 2666126171 in words is "two billion, six hundred sixty-six million, one hundred twenty-six thousand, one hundred seventy-one".