17446542989 has 2 divisors, whose sum is σ = 17446542990. Its totient is φ = 17446542988.

The previous prime is 17446542977. The next prime is 17446543019. The reversal of 17446542989 is 98924564471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17445918889 + 624100 = 132083^2 + 790^2 .

It is an emirp because it is prime and its reverse (98924564471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17446542989 - 2¹⁶ = 17446477453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17446542389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8723271494 + 8723271495.

It is an arithmetic number, because the mean of its divisors is an integer number (8723271495).

Almost surely, 2^17446542989 is an apocalyptic number.

It is an amenable number.

17446542989 is a deficient number, since it is larger than the sum of its proper divisors (1).

17446542989 is an equidigital number, since it uses as much as digits as its factorization.

17446542989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 59.

The spelling of 17446542989 in words is "seventeen billion, four hundred forty-six million, five hundred forty-two thousand, nine hundred eighty-nine".