117691555379 has 4 divisors (see below), whose sum is σ = 118012241184. Its totient is φ = 117370869576.

The previous prime is 117691555369. The next prime is 117691555477. The reversal of 117691555379 is 973555196711.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117691555379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117691555309) 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, 160342352 + ... + 160343085.

It is an arithmetic number, because the mean of its divisors is an integer number (29503060296).

Almost surely, 2^117691555379 is an apocalyptic number.

117691555379 is a deficient number, since it is larger than the sum of its proper divisors (320685805).

117691555379 is an equidigital number, since it uses as much as digits as its factorization.

117691555379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320685804.

The product of its digits is 8930250, while the sum is 59.

The spelling of 117691555379 in words is "one hundred seventeen billion, six hundred ninety-one million, five hundred fifty-five thousand, three hundred seventy-nine".