66473164717 has 4 divisors (see below), whose sum is σ = 66473912736. Its totient is φ = 66472416700.

The previous prime is 66473164711. The next prime is 66473164789. The reversal of 66473164717 is 71746137466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 71746137466 = 2 ⋅35873068733.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66473164717 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 (66473164711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219409 + ... + 425542.

It is an arithmetic number, because the mean of its divisors is an integer number (16618478184).

Almost surely, 2^66473164717 is an apocalyptic number.

It is an amenable number.

66473164717 is a deficient number, since it is larger than the sum of its proper divisors (748019).

66473164717 is a wasteful number, since it uses less digits than its factorization.

66473164717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748018.

The product of its digits is 3556224, while the sum is 52.

The spelling of 66473164717 in words is "sixty-six billion, four hundred seventy-three million, one hundred sixty-four thousand, seven hundred seventeen".