117431776512 has 144 divisors (see below), whose sum is σ = 347449421760. Its totient is φ = 39123302400.

The previous prime is 117431776477. The next prime is 117431776519. The reversal of 117431776512 is 215677134711.

117431776512 is a `hidden beast` number, since 1 + 17 + 43 + 17 + 76 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×117431776512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117431776519) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18873562 + ... + 18879782.

Almost surely, 2^117431776512 is an apocalyptic number.

117431776512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117431776512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173724710880).

117431776512 is an abundant number, since it is smaller than the sum of its proper divisors (230017645248).

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

117431776512 is an equidigital number, since it uses as much as digits as its factorization.

117431776512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8977 (or 8957 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The spelling of 117431776512 in words is "one hundred seventeen billion, four hundred thirty-one million, seven hundred seventy-six thousand, five hundred twelve".