117184785138 has 12 divisors (see below), whose sum is σ = 253900367838. Its totient is φ = 39061595040.

The previous prime is 117184785127. The next prime is 117184785139. The reversal of 117184785138 is 831587481711.

117184785138 is a `hidden beast` number, since 11 + 71 + 8 + 47 + 8 + 513 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 67432144329 + 49752640809 = 259677^2 + 223053^2 .

It is not an unprimeable number, because it can be changed into a prime (117184785139) 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 5 ways as a sum of consecutive naturals, for example, 3255132903 + ... + 3255132938.

Almost surely, 2^117184785138 is an apocalyptic number.

117184785138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

117184785138 is an abundant number, since it is smaller than the sum of its proper divisors (136715582700).

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

117184785138 is a wasteful number, since it uses less digits than its factorization.

117184785138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510265849 (or 6510265846 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 54.

The spelling of 117184785138 in words is "one hundred seventeen billion, one hundred eighty-four million, seven hundred eighty-five thousand, one hundred thirty-eight".