66071050063 has 4 divisors (see below), whose sum is σ = 66115424320. Its totient is φ = 66026675808.

The previous prime is 66071050051. The next prime is 66071050079. The reversal of 66071050063 is 36005017066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66071050063 - 2¹³ = 66071041871 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 (66071050163) 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 in 3 ways as a sum of consecutive naturals, for example, 22184895 + ... + 22187872.

It is an arithmetic number, because the mean of its divisors is an integer number (16528856080).

Almost surely, 2^66071050063 is an apocalyptic number.

66071050063 is a deficient number, since it is larger than the sum of its proper divisors (44374257).

66071050063 is a wasteful number, since it uses less digits than its factorization.

66071050063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44374256.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 66071050063 in words is "sixty-six billion, seventy-one million, fifty thousand, sixty-three".