9666450533 has 4 divisors (see below), whose sum is σ = 9673132320. Its totient is φ = 9659768748.

The previous prime is 9666450499. The next prime is 9666450539. The reversal of 9666450533 is 3350546669.

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 9666450533 - 2¹² = 9666446437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9666450539) 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, 3338723 + ... + 3341616.

It is an arithmetic number, because the mean of its divisors is an integer number (2418283080).

Almost surely, 2^9666450533 is an apocalyptic number.

It is an amenable number.

9666450533 is a deficient number, since it is larger than the sum of its proper divisors (6681787).

9666450533 is a wasteful number, since it uses less digits than its factorization.

9666450533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681786.

The product of its (nonzero) digits is 1749600, while the sum is 47.

The square root of 9666450533 is about 98318.1088762391. The cubic root of 9666450533 is about 2130.2096330222.

The spelling of 9666450533 in words is "nine billion, six hundred sixty-six million, four hundred fifty thousand, five hundred thirty-three".