9661196888 has 16 divisors (see below), whose sum is σ = 20702564880. Its totient is φ = 4140512928.

The previous prime is 9661196887. The next prime is 9661196933. The reversal of 9661196888 is 8886911669.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9661196888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661196887) 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, 86260631 + ... + 86260742.

It is an arithmetic number, because the mean of its divisors is an integer number (1293910305).

Almost surely, 2^9661196888 is an apocalyptic number.

It is an amenable number.

9661196888 is an abundant number, since it is smaller than the sum of its proper divisors (11041367992).

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

9661196888 is a wasteful number, since it uses less digits than its factorization.

9661196888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172521386 (or 172521382 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 62.

The square root of 9661196888 is about 98291.3876593468. The cubic root of 9661196888 is about 2129.8236453136.

The spelling of 9661196888 in words is "nine billion, six hundred sixty-one million, one hundred ninety-six thousand, eight hundred eighty-eight".