9561168988996 has 9 divisors (see below), whose sum is σ = 16732056553149. Its totient is φ = 4780581402384.

The previous prime is 9561168988981. The next prime is 9561168988997. The reversal of 9561168988996 is 6998898611659.

The square root of 9561168988996 is 3092114.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 573548728900 + 8987620260096 = 757330^2 + 2997936^2 .

It is a super-2 number, since 2×9561168988996² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9561168988997) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5411200 + ... + 6957256.

Almost surely, 2^{9561168988996} is an apocalyptic number.

9561168988996 is the 3092114-th square number.

It is an amenable number.

9561168988996 is a deficient number, since it is larger than the sum of its proper divisors (7170887564153).

9561168988996 is an frugal number, since it uses more digits than its factorization.

9561168988996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092118 (or 1546059 counting only the distinct ones).

The product of its digits is 3627970560, while the sum is 85.

The spelling of 9561168988996 in words is "nine trillion, five hundred sixty-one billion, one hundred sixty-eight million, nine hundred eighty-eight thousand, nine hundred ninety-six".