19068804228769 has 4 divisors (see below), whose sum is σ = 19257604270740. Its totient is φ = 18880004186800.

The previous prime is 19068804228757. The next prime is 19068804228787. The reversal of 19068804228769 is 96782240886091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11608875552400 + 7459928676369 = 3407180^2 + 2731287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19068804228769 is a prime.

It is a super-2 number, since 2×19068804228769² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19068804228698 and 19068804228707.

It is not an unprimeable number, because it can be changed into a prime (19068804228739) 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 3 ways as a sum of consecutive naturals, for example, 94400020834 + ... + 94400021035.

It is an arithmetic number, because the mean of its divisors is an integer number (4814401067685).

Almost surely, 2^{19068804228769} is an apocalyptic number.

It is an amenable number.

19068804228769 is a deficient number, since it is larger than the sum of its proper divisors (188800041971).

19068804228769 is a wasteful number, since it uses less digits than its factorization.

19068804228769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188800041970.

The product of its (nonzero) digits is 167215104, while the sum is 70.

The spelling of 19068804228769 in words is "nineteen trillion, sixty-eight billion, eight hundred four million, two hundred twenty-eight thousand, seven hundred sixty-nine".