138334784211 has 18 divisors (see below), whose sum is σ = 216369793068. Its totient is φ = 85129097040.

The previous prime is 138334784197. The next prime is 138334784281. The reversal of 138334784211 is 112487433831.

138334784211 is a `hidden beast` number, since 1 + 38 + 334 + 78 + 4 + 211 = 666.

It is not a de Polignac number, because 138334784211 - 2⁷ = 138334784083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138334784281) 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 17 ways as a sum of consecutive naturals, for example, 45473425 + ... + 45476466.

Almost surely, 2^138334784211 is an apocalyptic number.

138334784211 is a deficient number, since it is larger than the sum of its proper divisors (78035008857).

138334784211 is a wasteful number, since it uses less digits than its factorization.

138334784211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90949923 (or 90949907 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 138334784211 in words is "one hundred thirty-eight billion, three hundred thirty-four million, seven hundred eighty-four thousand, two hundred eleven".