8009191919109 has 16 divisors (see below), whose sum is σ = 10745604176832. Its totient is φ = 5306127585408.

The previous prime is 8009191919107. The next prime is 8009191919117. The reversal of 8009191919109 is 9019191919008.

It is not a de Polignac number, because 8009191919109 - 2¹ = 8009191919107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8009191919107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3642007 + ... + 5411339.

It is an arithmetic number, because the mean of its divisors is an integer number (671600261052).

Almost surely, 2^{8009191919109} is an apocalyptic number.

It is an amenable number.

8009191919109 is a deficient number, since it is larger than the sum of its proper divisors (2736412257723).

8009191919109 is a wasteful number, since it uses less digits than its factorization.

8009191919109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778756.

The product of its (nonzero) digits is 472392, while the sum is 57.

The spelling of 8009191919109 in words is "eight trillion, nine billion, one hundred ninety-one million, nine hundred nineteen thousand, one hundred nine".