66043041057 has 24 divisors (see below), whose sum is σ = 109035204096. Its totient is φ = 37734806016.

The previous prime is 66043041017. The next prime is 66043041061. The reversal of 66043041057 is 75014034066.

It is a happy number.

66043041057 is a `hidden beast` number, since 6 + 604 + 3 + 0 + 41 + 0 + 5 + 7 = 666.

It is not a de Polignac number, because 66043041057 - 2⁷ = 66043040929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66043041007) 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 in 23 ways as a sum of consecutive naturals, for example, 589648 + ... + 692654.

It is an arithmetic number, because the mean of its divisors is an integer number (4543133504).

Almost surely, 2^66043041057 is an apocalyptic number.

It is an amenable number.

66043041057 is a deficient number, since it is larger than the sum of its proper divisors (42992163039).

66043041057 is a wasteful number, since it uses less digits than its factorization.

66043041057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113197 (or 113194 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 66043041057 in words is "sixty-six billion, forty-three million, forty-one thousand, fifty-seven".