2766166121 has 2 divisors, whose sum is σ = 2766166122. Its totient is φ = 2766166120.

The previous prime is 2766166103. The next prime is 2766166127. The reversal of 2766166121 is 1216616672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2607532096 + 158634025 = 51064^2 + 12595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2766166121 - 2¹⁰ = 2766165097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2766166127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1383083060 + 1383083061.

It is an arithmetic number, because the mean of its divisors is an integer number (1383083061).

Almost surely, 2^2766166121 is an apocalyptic number.

It is an amenable number.

2766166121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2766166121 is an equidigital number, since it uses as much as digits as its factorization.

2766166121 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 2766166121 is about 52594.3544593904. The cubic root of 2766166121 is about 1403.7596430630.

The spelling of 2766166121 in words is "two billion, seven hundred sixty-six million, one hundred sixty-six thousand, one hundred twenty-one".