19684384145488 has 40 divisors (see below), whose sum is σ = 38149811604000. Its totient is φ = 9839272020864.

The previous prime is 19684384145443. The next prime is 19684384145527. The reversal of 19684384145488 is 88454148348691.

It is a self number, because there is not a number n which added to its sum of digits gives 19684384145488.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1159328583 + ... + 1159345561.

It is an arithmetic number, because the mean of its divisors is an integer number (953745290100).

Almost surely, 2^{19684384145488} is an apocalyptic number.

It is an amenable number.

19684384145488 is a deficient number, since it is larger than the sum of its proper divisors (18465427458512).

19684384145488 is a wasteful number, since it uses less digits than its factorization.

19684384145488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34219 (or 34213 counting only the distinct ones).

The product of its digits is 849346560, while the sum is 73.

The spelling of 19684384145488 in words is "nineteen trillion, six hundred eighty-four billion, three hundred eighty-four million, one hundred forty-five thousand, four hundred eighty-eight".