66606611561159 has 8 divisors (see below), whose sum is σ = 66753151309152. Its totient is φ = 66460080718240.

The previous prime is 66606611561141. The next prime is 66606611561197. The reversal of 66606611561159 is 95116511660666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66606611561159 - 2⁸ = 66606611560903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66606611561098 and 66606611561107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66606611561759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12861782 + ... + 17281164.

It is an arithmetic number, because the mean of its divisors is an integer number (8344143913644).

Almost surely, 2^{66606611561159} is an apocalyptic number.

66606611561159 is a deficient number, since it is larger than the sum of its proper divisors (146539747993).

66606611561159 is a wasteful number, since it uses less digits than its factorization.

66606611561159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452537.

The product of its (nonzero) digits is 10497600, while the sum is 59.

The spelling of 66606611561159 in words is "sixty-six trillion, six hundred six billion, six hundred eleven million, five hundred sixty-one thousand, one hundred fifty-nine".