9936818760989 has 2 divisors, whose sum is σ = 9936818760990. Its totient is φ = 9936818760988.

The previous prime is 9936818760983. The next prime is 9936818761031. The reversal of 9936818760989 is 9890678186399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6407429064100 + 3529389696889 = 2531290^2 + 1878667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9936818760989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9936818760983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4968409380494 + 4968409380495.

It is an arithmetic number, because the mean of its divisors is an integer number (4968409380495).

Almost surely, 2^{9936818760989} is an apocalyptic number.

It is an amenable number.

9936818760989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9936818760989 is an equidigital number, since it uses as much as digits as its factorization.

9936818760989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2539579392, while the sum is 83.

The spelling of 9936818760989 in words is "nine trillion, nine hundred thirty-six billion, eight hundred eighteen million, seven hundred sixty thousand, nine hundred eighty-nine".