117438717186 has 168 divisors, whose sum is σ = 320599949184. Its totient is φ = 32094604080.

The previous prime is 117438717133. The next prime is 117438717191. The reversal of 117438717186 is 681717834711.

117438717186 is a `hidden beast` number, since 1 + 1 + 74 + 387 + 17 + 186 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1607431 + ... + 1678901.

Almost surely, 2^117438717186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117438717186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160299974592).

117438717186 is an abundant number, since it is smaller than the sum of its proper divisors (203161231998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117438717186 is an equidigital number, since it uses as much as digits as its factorization.

117438717186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71528 (or 71506 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 54.

The spelling of 117438717186 in words is "one hundred seventeen billion, four hundred thirty-eight million, seven hundred seventeen thousand, one hundred eighty-six".