19699119471789 has 6 divisors (see below), whose sum is σ = 28454283681486. Its totient is φ = 13132746314520.

The previous prime is 19699119471767. The next prime is 19699119471803. The reversal of 19699119471789 is 98717491199691.

It is a happy number.

19699119471789 is a `hidden beast` number, since 1 + 9 + 69 + 9 + 1 + 1 + 9 + 471 + 7 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18555994982889 + 1143124488900 = 4307667^2 + 1069170^2 .

It is not a de Polignac number, because 19699119471789 - 2¹¹ = 19699119469741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19699119471719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1094395526202 + ... + 1094395526219.

It is an arithmetic number, because the mean of its divisors is an integer number (4742380613581).

Almost surely, 2^{19699119471789} is an apocalyptic number.

It is an amenable number.

19699119471789 is a deficient number, since it is larger than the sum of its proper divisors (8755164209697).

19699119471789 is a wasteful number, since it uses less digits than its factorization.

19699119471789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188791052427 (or 2188791052424 counting only the distinct ones).

The product of its digits is 555532992, while the sum is 81.

The spelling of 19699119471789 in words is "nineteen trillion, six hundred ninety-nine billion, one hundred nineteen million, four hundred seventy-one thousand, seven hundred eighty-nine".