9661591314 has 24 divisors (see below), whose sum is σ = 22035209040. Its totient is φ = 3051028728.

The previous prime is 9661591273. The next prime is 9661591319. The reversal of 9661591314 is 4131951669.

9661591314 is a `hidden beast` number, since 9 + 6 + 615 + 9 + 13 + 14 = 666.

9661591314 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9661591314.

It is not an unprimeable number, because it can be changed into a prime (9661591319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14124792 + ... + 14125475.

It is an arithmetic number, because the mean of its divisors is an integer number (918133710).

Almost surely, 2^9661591314 is an apocalyptic number.

9661591314 is an abundant number, since it is smaller than the sum of its proper divisors (12373617726).

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

9661591314 is a wasteful number, since it uses less digits than its factorization.

9661591314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28250294 (or 28250291 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 9661591314 is about 98293.3940506685. The cubic root of 9661591314 is about 2129.8526288305.

The spelling of 9661591314 in words is "nine billion, six hundred sixty-one million, five hundred ninety-one thousand, three hundred fourteen".