9661178794197 has 32 divisors (see below), whose sum is σ = 14953134809088. Its totient is φ = 5434222352256.

The previous prime is 9661178794177. The next prime is 9661178794219. The reversal of 9661178794197 is 7914978711669.

It is not a de Polignac number, because 9661178794197 - 2⁸ = 9661178793941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661178794117) 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 31 ways as a sum of consecutive naturals, for example, 5493453 + ... + 7035650.

It is an arithmetic number, because the mean of its divisors is an integer number (467285462784).

Almost surely, 2^{9661178794197} is an apocalyptic number.

It is an amenable number.

9661178794197 is a deficient number, since it is larger than the sum of its proper divisors (5291956014891).

9661178794197 is a wasteful number, since it uses less digits than its factorization.

9661178794197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12529689.

The product of its digits is 288054144, while the sum is 75.

The spelling of 9661178794197 in words is "nine trillion, six hundred sixty-one billion, one hundred seventy-eight million, seven hundred ninety-four thousand, one hundred ninety-seven".