9847131864197 has 2 divisors, whose sum is σ = 9847131864198. Its totient is φ = 9847131864196.

The previous prime is 9847131864139. The next prime is 9847131864211. The reversal of 9847131864197 is 7914681317489.

It is a Cunningham number, because it is equal to 3138014²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9847131864196 + 1 = 3138014^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9847131864197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9847131864137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4923565932098 + 4923565932099.

It is an arithmetic number, because the mean of its divisors is an integer number (4923565932099).

Almost surely, 2^{9847131864197} is an apocalyptic number.

It is an amenable number.

9847131864197 is a deficient number, since it is larger than the sum of its proper divisors (1).

9847131864197 is an equidigital number, since it uses as much as digits as its factorization.

9847131864197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 68.

The spelling of 9847131864197 in words is "nine trillion, eight hundred forty-seven billion, one hundred thirty-one million, eight hundred sixty-four thousand, one hundred ninety-seven".