117182121518 has 32 divisors (see below), whose sum is σ = 220247078400. Its totient is φ = 45425936160.

The previous prime is 117182121517. The next prime is 117182121559. The reversal of 117182121518 is 815121281711.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117182121517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1881221 + ... + 1942512.

It is an arithmetic number, because the mean of its divisors is an integer number (6882721200).

Almost surely, 2^117182121518 is an apocalyptic number.

117182121518 is a deficient number, since it is larger than the sum of its proper divisors (103064956882).

117182121518 is a wasteful number, since it uses less digits than its factorization.

117182121518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823952.

The product of its digits is 8960, while the sum is 38.

The spelling of 117182121518 in words is "one hundred seventeen billion, one hundred eighty-two million, one hundred twenty-one thousand, five hundred eighteen".