12117047361 has 4 divisors (see below), whose sum is σ = 16156063152. Its totient is φ = 8078031572.

The previous prime is 12117047323. The next prime is 12117047387. The reversal of 12117047361 is 16374071121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12117047361 - 2¹⁵ = 12117014593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12117047161) 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, 2019507891 + ... + 2019507896.

It is an arithmetic number, because the mean of its divisors is an integer number (4039015788).

Almost surely, 2^12117047361 is an apocalyptic number.

It is an amenable number.

12117047361 is a deficient number, since it is larger than the sum of its proper divisors (4039015791).

12117047361 is an equidigital number, since it uses as much as digits as its factorization.

12117047361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039015790.

The product of its (nonzero) digits is 7056, while the sum is 33.

The spelling of 12117047361 in words is "twelve billion, one hundred seventeen million, forty-seven thousand, three hundred sixty-one".