12043331451 has 8 divisors (see below), whose sum is σ = 17841972560. Its totient is φ = 8028887616.

The previous prime is 12043331423. The next prime is 12043331527. The reversal of 12043331451 is 15413334021.

It is a happy number.

12043331451 is a `hidden beast` number, since 1 + 204 + 3 + 3 + 3 + 1 + 451 = 666.

It is not a de Polignac number, because 12043331451 - 2²² = 12039137147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 446049313 = 12043331451 / (1 + 2 + 0 + 4 + 3 + 3 + 3 + 1 + 4 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12043331851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223024630 + ... + 223024683.

It is an arithmetic number, because the mean of its divisors is an integer number (2230246570).

Almost surely, 2^12043331451 is an apocalyptic number.

12043331451 is a deficient number, since it is larger than the sum of its proper divisors (5798641109).

12043331451 is an equidigital number, since it uses as much as digits as its factorization.

12043331451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446049322 (or 446049316 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 12043331451 its reverse (15413334021), we get a palindrome (27456665472).

The spelling of 12043331451 in words is "twelve billion, forty-three million, three hundred thirty-one thousand, four hundred fifty-one".