9741820896991 has 2 divisors, whose sum is σ = 9741820896992. Its totient is φ = 9741820896990.

The previous prime is 9741820896979. The next prime is 9741820897033. The reversal of 9741820896991 is 1996980281479.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9741820896991 - 2¹³ = 9741820888799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9741820896931) 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, 4870910448495 + 4870910448496.

It is an arithmetic number, because the mean of its divisors is an integer number (4870910448496).

Almost surely, 2^{9741820896991} is an apocalyptic number.

9741820896991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9741820896991 is an equidigital number, since it uses as much as digits as its factorization.

9741820896991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141087744, while the sum is 73.

The spelling of 9741820896991 in words is "nine trillion, seven hundred forty-one billion, eight hundred twenty million, eight hundred ninety-six thousand, nine hundred ninety-one".