66956885159 has 8 divisors (see below), whose sum is σ = 67256698080. Its totient is φ = 66657254400.

The previous prime is 66956885147. The next prime is 66956885179. The reversal of 66956885159 is 95158865966.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66956885159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66956885179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719894 + ... + 807564.

It is an arithmetic number, because the mean of its divisors is an integer number (8407087260).

Almost surely, 2^66956885159 is an apocalyptic number.

66956885159 is a deficient number, since it is larger than the sum of its proper divisors (299812921).

66956885159 is a wasteful number, since it uses less digits than its factorization.

66956885159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91081.

The product of its digits is 139968000, while the sum is 68.

The spelling of 66956885159 in words is "sixty-six billion, nine hundred fifty-six million, eight hundred eighty-five thousand, one hundred fifty-nine".