9451320066 has 12 divisors (see below), whose sum is σ = 20477860182. Its totient is φ = 3150440016.

The previous prime is 9451320059. The next prime is 9451320089. The reversal of 9451320066 is 6600231549.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9444924225 + 6395841 = 97185^2 + 2529^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9451320066.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 262536651 + ... + 262536686.

Almost surely, 2^9451320066 is an apocalyptic number.

9451320066 is an abundant number, since it is smaller than the sum of its proper divisors (11026540116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9451320066 is a wasteful number, since it uses less digits than its factorization.

9451320066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525073345 (or 525073342 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 9451320066 is about 97217.8999258881. The cubic root of 9451320066 is about 2114.2880584164.

The spelling of 9451320066 in words is "nine billion, four hundred fifty-one million, three hundred twenty thousand, sixty-six".