9611661169 has 8 divisors (see below), whose sum is σ = 10502450208. Its totient is φ = 8723705760.

The previous prime is 9611661133. The next prime is 9611661173.

It is a happy number.

9611661169 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 9611661169 - 2²¹ = 9609564017 is a prime.

It is a super-2 number, since 2×9611661169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9611661179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701307 + ... + 714880.

It is an arithmetic number, because the mean of its divisors is an integer number (1312806276).

Almost surely, 2^9611661169 is an apocalyptic number.

It is an amenable number.

9611661169 is a deficient number, since it is larger than the sum of its proper divisors (890789039).

9611661169 is a wasteful number, since it uses less digits than its factorization.

9611661169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416815.

The product of its digits is 104976, while the sum is 46.

The square root of 9611661169 is about 98039.0798049431. The cubic root of 9611661169 is about 2126.1773346895.

The spelling of 9611661169 in words is "nine billion, six hundred eleven million, six hundred sixty-one thousand, one hundred sixty-nine".