138613786275 has 48 divisors (see below), whose sum is σ = 236580322176. Its totient is φ = 71568913920.

The previous prime is 138613786247. The next prime is 138613786309. The reversal of 138613786275 is 572687316831.

It is not a de Polignac number, because 138613786275 - 2¹⁰ = 138613785251 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174244 + ... + 554606.

It is an arithmetic number, because the mean of its divisors is an integer number (4928756712).

Almost surely, 2^138613786275 is an apocalyptic number.

138613786275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138613786275 is a deficient number, since it is larger than the sum of its proper divisors (97966535901).

138613786275 is a wasteful number, since it uses less digits than its factorization.

138613786275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380532 (or 380527 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 57.

The spelling of 138613786275 in words is "one hundred thirty-eight billion, six hundred thirteen million, seven hundred eighty-six thousand, two hundred seventy-five".