9816196111961 has 2 divisors, whose sum is σ = 9816196111962. Its totient is φ = 9816196111960.

The previous prime is 9816196111927. The next prime is 9816196111999. The reversal of 9816196111961 is 1691116916189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8331102913225 + 1485093198736 = 2886365^2 + 1218644^2 .

It is a cyclic number.

It is not a de Polignac number, because 9816196111961 - 2³⁴ = 9799016242777 is a prime.

It is a super-2 number, since 2×9816196111961² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9816196111961.

It is not a weakly prime, because it can be changed into another prime (9816196111261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4908098055980 + 4908098055981.

It is an arithmetic number, because the mean of its divisors is an integer number (4908098055981).

Almost surely, 2^{9816196111961} is an apocalyptic number.

It is an amenable number.

9816196111961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9816196111961 is an equidigital number, since it uses as much as digits as its factorization.

9816196111961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 59.

The spelling of 9816196111961 in words is "nine trillion, eight hundred sixteen billion, one hundred ninety-six million, one hundred eleven thousand, nine hundred sixty-one".