117871519909 has 8 divisors (see below), whose sum is σ = 138478429152. Its totient is φ = 98913163440.

The previous prime is 117871519907. The next prime is 117871519937. The reversal of 117871519909 is 909915178711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117871519909 - 2¹ = 117871519907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117871519903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412138039 + ... + 412138324.

It is an arithmetic number, because the mean of its divisors is an integer number (17309803644).

Almost surely, 2^117871519909 is an apocalyptic number.

It is an amenable number.

117871519909 is a deficient number, since it is larger than the sum of its proper divisors (20606909243).

117871519909 is a wasteful number, since it uses less digits than its factorization.

117871519909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824276387.

The product of its (nonzero) digits is 1428840, while the sum is 58.

The spelling of 117871519909 in words is "one hundred seventeen billion, eight hundred seventy-one million, five hundred nineteen thousand, nine hundred nine".