12127085538 has 8 divisors (see below), whose sum is σ = 24254171088. Its totient is φ = 4042361844.

The previous prime is 12127085489. The next prime is 12127085567. The reversal of 12127085538 is 83558072121.

12127085538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

12127085538 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12127085538.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1010590456 + ... + 1010590467.

It is an arithmetic number, because the mean of its divisors is an integer number (3031771386).

Almost surely, 2^12127085538 is an apocalyptic number.

12127085538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12127085538 is a wasteful number, since it uses less digits than its factorization.

12127085538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021180928.

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 12127085538 in words is "twelve billion, one hundred twenty-seven million, eighty-five thousand, five hundred thirty-eight".