117238787191 has 8 divisors (see below), whose sum is σ = 123004631168. Its totient is φ = 111596940000.

The previous prime is 117238787117. The next prime is 117238787201. The reversal of 117238787191 is 191787832711.

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

It is a cyclic number.

It is not a de Polignac number, because 117238787191 - 2¹¹ = 117238785143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117238737191) 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, 30997260 + ... + 31001041.

It is an arithmetic number, because the mean of its divisors is an integer number (15375578896).

Almost surely, 2^117238787191 is an apocalyptic number.

117238787191 is a deficient number, since it is larger than the sum of its proper divisors (5765843977).

117238787191 is an equidigital number, since it uses as much as digits as its factorization.

117238787191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61998393.

The product of its digits is 1185408, while the sum is 55.

The spelling of 117238787191 in words is "one hundred seventeen billion, two hundred thirty-eight million, seven hundred eighty-seven thousand, one hundred ninety-one".