12175477147 has 4 divisors (see below), whose sum is σ = 12178265760. Its totient is φ = 12172688536.

The previous prime is 12175477117. The next prime is 12175477159. The reversal of 12175477147 is 74177457121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74177457121 = 29 ⋅2557843349.

It is a cyclic number.

It is not a de Polignac number, because 12175477147 - 2⁷ = 12175477019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12175477097 and 12175477106.

It is not an unprimeable number, because it can be changed into a prime (12175477117) 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 in 3 ways as a sum of consecutive naturals, for example, 1387747 + ... + 1396492.

It is an arithmetic number, because the mean of its divisors is an integer number (3044566440).

Almost surely, 2^12175477147 is an apocalyptic number.

12175477147 is a deficient number, since it is larger than the sum of its proper divisors (2788613).

12175477147 is an equidigital number, since it uses as much as digits as its factorization.

12175477147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788612.

The product of its digits is 384160, while the sum is 46.

The spelling of 12175477147 in words is "twelve billion, one hundred seventy-five million, four hundred seventy-seven thousand, one hundred forty-seven".