20166866119 has 2 divisors, whose sum is σ = 20166866120. Its totient is φ = 20166866118.

The previous prime is 20166866101. The next prime is 20166866129. The reversal of 20166866119 is 91166866102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20166866119 - 2⁵ = 20166866087 is a prime.

It is a super-2 number, since 2×20166866119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20166866129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10083433059 + 10083433060.

It is an arithmetic number, because the mean of its divisors is an integer number (10083433060).

Almost surely, 2^20166866119 is an apocalyptic number.

20166866119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20166866119 is an equidigital number, since it uses as much as digits as its factorization.

20166866119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 20166866119 in words is "twenty billion, one hundred sixty-six million, eight hundred sixty-six thousand, one hundred nineteen".