12138055147 has 2 divisors, whose sum is σ = 12138055148. Its totient is φ = 12138055146.

The previous prime is 12138055141. The next prime is 12138055253. The reversal of 12138055147 is 74155083121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12138055147 - 2¹¹ = 12138053099 is a prime.

It is a super-3 number, since 3×12138055147³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (12138055141) 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 as a sum of consecutive naturals, namely, 6069027573 + 6069027574.

It is an arithmetic number, because the mean of its divisors is an integer number (6069027574).

Almost surely, 2^12138055147 is an apocalyptic number.

12138055147 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138055147 is an equidigital number, since it uses as much as digits as its factorization.

12138055147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 12138055147 in words is "twelve billion, one hundred thirty-eight million, fifty-five thousand, one hundred forty-seven".