9981469736089 has 2 divisors, whose sum is σ = 9981469736090. Its totient is φ = 9981469736088.

The previous prime is 9981469736087. The next prime is 9981469736233. The reversal of 9981469736089 is 9806379641899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9602611020864 + 378858715225 = 3098808^2 + 615515^2 .

It is a cyclic number.

It is not a de Polignac number, because 9981469736089 - 2¹ = 9981469736087 is a prime.

It is a super-2 number, since 2×9981469736089² (a number of 27 digits) contains 22 as substring.

Together with 9981469736087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9981469736087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4990734868044 + 4990734868045.

It is an arithmetic number, because the mean of its divisors is an integer number (4990734868045).

Almost surely, 2^{9981469736089} is an apocalyptic number.

It is an amenable number.

9981469736089 is a deficient number, since it is larger than the sum of its proper divisors (1).

9981469736089 is an equidigital number, since it uses as much as digits as its factorization.

9981469736089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1269789696, while the sum is 79.

The spelling of 9981469736089 in words is "nine trillion, nine hundred eighty-one billion, four hundred sixty-nine million, seven hundred thirty-six thousand, eighty-nine".