66044159 has 2 divisors, whose sum is σ = 66044160. Its totient is φ = 66044158.

The previous prime is 66044131. The next prime is 66044183. The reversal of 66044159 is 95144066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66044159 - 2¹⁶ = 65978623 is a prime.

It is a super-3 number, since 3×66044159³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66044119) 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, 33022079 + 33022080.

It is an arithmetic number, because the mean of its divisors is an integer number (33022080).

Almost surely, 2^66044159 is an apocalyptic number.

66044159 is a deficient number, since it is larger than the sum of its proper divisors (1).

66044159 is an equidigital number, since it uses as much as digits as its factorization.

66044159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 66044159 is about 8126.7557487598. The cubic root of 66044159 is about 404.2141118261.

The spelling of 66044159 in words is "sixty-six million, forty-four thousand, one hundred fifty-nine".