12127475345 has 8 divisors (see below), whose sum is σ = 15054797160. Its totient is φ = 9367429120.

The previous prime is 12127475341. The next prime is 12127475389. The reversal of 12127475345 is 54357472121.

12127475345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 330039889 + 11797435456 = 18167^2 + 108616^2 .

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

It is not a de Polignac number, because 12127475345 - 2² = 12127475341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12127475341) 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 7 ways as a sum of consecutive naturals, for example, 41818736 + ... + 41819025.

It is an arithmetic number, because the mean of its divisors is an integer number (1881849645).

Almost surely, 2^12127475345 is an apocalyptic number.

It is an amenable number.

12127475345 is a deficient number, since it is larger than the sum of its proper divisors (2927321815).

12127475345 is an equidigital number, since it uses as much as digits as its factorization.

12127475345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83637795.

The product of its digits is 235200, while the sum is 41.

The spelling of 12127475345 in words is "twelve billion, one hundred twenty-seven million, four hundred seventy-five thousand, three hundred forty-five".