12051443451 has 4 divisors (see below), whose sum is σ = 16068591272. Its totient is φ = 8034295632.

The previous prime is 12051443449. The next prime is 12051443483. The reversal of 12051443451 is 15434415021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12051443451 - 2¹ = 12051443449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12051443851) 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, 2008573906 + ... + 2008573911.

It is an arithmetic number, because the mean of its divisors is an integer number (4017147818).

Almost surely, 2^12051443451 is an apocalyptic number.

12051443451 is a deficient number, since it is larger than the sum of its proper divisors (4017147821).

12051443451 is an equidigital number, since it uses as much as digits as its factorization.

12051443451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017147820.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 12051443451 its reverse (15434415021), we get a palindrome (27485858472).

The spelling of 12051443451 in words is "twelve billion, fifty-one million, four hundred forty-three thousand, four hundred fifty-one".