12427447061 has 4 divisors (see below), whose sum is σ = 12433080192. Its totient is φ = 12421813932.

The previous prime is 12427447033. The next prime is 12427447069. The reversal of 12427447061 is 16074472421.

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 12427447061 - 2¹⁴ = 12427430677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12427447069) 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, 2813255 + ... + 2817668.

It is an arithmetic number, because the mean of its divisors is an integer number (3108270048).

Almost surely, 2^12427447061 is an apocalyptic number.

It is an amenable number.

12427447061 is a deficient number, since it is larger than the sum of its proper divisors (5633131).

12427447061 is an equidigital number, since it uses as much as digits as its factorization.

12427447061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633130.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 12427447061 in words is "twelve billion, four hundred twenty-seven million, four hundred forty-seven thousand, sixty-one".