19798280559 has 12 divisors (see below), whose sum is σ = 28682379856. Its totient is φ = 13159685952.

The previous prime is 19798280519. The next prime is 19798280581. The reversal of 19798280559 is 95508289791.

19798280559 is a `hidden beast` number, since 1 + 9 + 79 + 8 + 2 + 8 + 0 + 559 = 666.

It is not a de Polignac number, because 19798280559 - 2⁷ = 19798280431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19798280496 and 19798280505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19798280519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3260779 + ... + 3266844.

Almost surely, 2^19798280559 is an apocalyptic number.

19798280559 is a deficient number, since it is larger than the sum of its proper divisors (8884099297).

19798280559 is a wasteful number, since it uses less digits than its factorization.

19798280559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6527966 (or 6527963 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 63.

The spelling of 19798280559 in words is "nineteen billion, seven hundred ninety-eight million, two hundred eighty thousand, five hundred fifty-nine".