9988832821841 has 2 divisors, whose sum is σ = 9988832821842. Its totient is φ = 9988832821840.

The previous prime is 9988832821789. The next prime is 9988832821909. The reversal of 9988832821841 is 1481282388899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9801000729025 + 187832092816 = 3130655^2 + 433396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9988832821841 is a prime.

It is a super-2 number, since 2×9988832821841² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9988832821741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994416410920 + 4994416410921.

It is an arithmetic number, because the mean of its divisors is an integer number (4994416410921).

Almost surely, 2^{9988832821841} is an apocalyptic number.

It is an amenable number.

9988832821841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988832821841 is an equidigital number, since it uses as much as digits as its factorization.

9988832821841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127401984, while the sum is 71.

The spelling of 9988832821841 in words is "nine trillion, nine hundred eighty-eight billion, eight hundred thirty-two million, eight hundred twenty-one thousand, eight hundred forty-one".