138784183826247 has 24 divisors (see below), whose sum is σ = 214318922392224. Its totient is φ = 86234832658944.

The previous prime is 138784183826237. The next prime is 138784183826303. The reversal of 138784183826247 is 742628381487831.

138784183826247 is a `hidden beast` number, since 1 + 3 + 8 + 78 + 418 + 3 + 82 + 62 + 4 + 7 = 666.

It is not a de Polignac number, because 138784183826247 - 2¹⁰ = 138784183825223 is a prime.

It is a super-2 number, since 2×138784183826247² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138784183826237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4403315158 + ... + 4403346675.

It is an arithmetic number, because the mean of its divisors is an integer number (8929955099676).

Almost surely, 2^{138784183826247} is an apocalyptic number.

138784183826247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

138784183826247 is a deficient number, since it is larger than the sum of its proper divisors (75534738565977).

138784183826247 is a wasteful number, since it uses less digits than its factorization.

138784183826247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8806661959 (or 8806661956 counting only the distinct ones).

The product of its digits is 693633024, while the sum is 72.

The spelling of 138784183826247 in words is "one hundred thirty-eight trillion, seven hundred eighty-four billion, one hundred eighty-three million, eight hundred twenty-six thousand, two hundred forty-seven".