66475324473 has 4 divisors (see below), whose sum is σ = 88633765968. Its totient is φ = 44316882980.

The previous prime is 66475324427. The next prime is 66475324499. The reversal of 66475324473 is 37442357466.

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.

It is a cyclic number.

It is not a de Polignac number, because 66475324473 - 2¹⁰ = 66475323449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66475324403) 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, 11079220743 + ... + 11079220748.

It is an arithmetic number, because the mean of its divisors is an integer number (22158441492).

Almost surely, 2^66475324473 is an apocalyptic number.

It is an amenable number.

66475324473 is a deficient number, since it is larger than the sum of its proper divisors (22158441495).

66475324473 is a wasteful number, since it uses less digits than its factorization.

66475324473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22158441494.

The product of its digits is 10160640, while the sum is 51.

The spelling of 66475324473 in words is "sixty-six billion, four hundred seventy-five million, three hundred twenty-four thousand, four hundred seventy-three".