12185045611 has 4 divisors (see below), whose sum is σ = 12197832552. Its totient is φ = 12172258672.

The previous prime is 12185045569. The next prime is 12185045633. The reversal of 12185045611 is 11654058121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11654058121 = 2437 ⋅4782133.

It is a cyclic number.

It is not a de Polignac number, because 12185045611 - 2¹⁵ = 12185012843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12185045311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6392041 + ... + 6393946.

It is an arithmetic number, because the mean of its divisors is an integer number (3049458138).

Almost surely, 2^12185045611 is an apocalyptic number.

12185045611 is a deficient number, since it is larger than the sum of its proper divisors (12786941).

12185045611 is an equidigital number, since it uses as much as digits as its factorization.

12185045611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12786940.

The product of its (nonzero) digits is 9600, while the sum is 34.

The spelling of 12185045611 in words is "twelve billion, one hundred eighty-five million, forty-five thousand, six hundred eleven".