17880328789 has 2 divisors, whose sum is σ = 17880328790. Its totient is φ = 17880328788.

The previous prime is 17880328751. The next prime is 17880328811. The reversal of 17880328789 is 98782308871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16391680900 + 1488647889 = 128030^2 + 38583^2 .

It is a cyclic number.

It is not a de Polignac number, because 17880328789 - 2¹¹ = 17880326741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17880328709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8940164394 + 8940164395.

It is an arithmetic number, because the mean of its divisors is an integer number (8940164395).

Almost surely, 2^17880328789 is an apocalyptic number.

It is an amenable number.

17880328789 is a deficient number, since it is larger than the sum of its proper divisors (1).

17880328789 is an equidigital number, since it uses as much as digits as its factorization.

17880328789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 61.

The spelling of 17880328789 in words is "seventeen billion, eight hundred eighty million, three hundred twenty-eight thousand, seven hundred eighty-nine".