9505116661 has 8 divisors (see below), whose sum is σ = 9534730464. Its totient is φ = 9475549680.

The previous prime is 9505116629. The next prime is 9505116667. The reversal of 9505116661 is 1666115059.

9505116661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9505116661 - 2⁵ = 9505116629 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 (9505116667) 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 7 ways as a sum of consecutive naturals, for example, 419226 + ... + 441316.

It is an arithmetic number, because the mean of its divisors is an integer number (1191841308).

Almost surely, 2^9505116661 is an apocalyptic number.

It is an amenable number.

9505116661 is a deficient number, since it is larger than the sum of its proper divisors (29613803).

9505116661 is a wasteful number, since it uses less digits than its factorization.

9505116661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23411.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 9505116661 is about 97494.1878318908. The cubic root of 9505116661 is about 2118.2919567495.

The spelling of 9505116661 in words is "nine billion, five hundred five million, one hundred sixteen thousand, six hundred sixty-one".