2066169761 has 2 divisors, whose sum is σ = 2066169762. Its totient is φ = 2066169760.

The previous prime is 2066169733. The next prime is 2066169767. The reversal of 2066169761 is 1679616602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1946486161 + 119683600 = 44119^2 + 10940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066169761 - 2²² = 2061975457 is a prime.

It is not a weakly prime, because it can be changed into another prime (2066169767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033084880 + 1033084881.

It is an arithmetic number, because the mean of its divisors is an integer number (1033084881).

Almost surely, 2^2066169761 is an apocalyptic number.

It is an amenable number.

2066169761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066169761 is an equidigital number, since it uses as much as digits as its factorization.

2066169761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 2066169761 is about 45455.1400943832. The cubic root of 2066169761 is about 1273.6653492109.

The spelling of 2066169761 in words is "two billion, sixty-six million, one hundred sixty-nine thousand, seven hundred sixty-one".