12040450351 has 4 divisors (see below), whose sum is σ = 12175736400. Its totient is φ = 11905164304.

The previous prime is 12040450333. The next prime is 12040450369. The reversal of 12040450351 is 15305404021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15305404021 = 1439 ⋅10636139.

It is an interprime number because it is at equal distance from previous prime (12040450333) and next prime (12040450369).

It is a cyclic number.

It is not a de Polignac number, because 12040450351 - 2⁵ = 12040450319 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 (12040450391) 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, 67642891 + ... + 67643068.

It is an arithmetic number, because the mean of its divisors is an integer number (3043934100).

Almost surely, 2^12040450351 is an apocalyptic number.

12040450351 is a deficient number, since it is larger than the sum of its proper divisors (135286049).

12040450351 is an equidigital number, since it uses as much as digits as its factorization.

12040450351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135286048.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 12040450351 its reverse (15305404021), we get a palindrome (27345854372).

The spelling of 12040450351 in words is "twelve billion, forty million, four hundred fifty thousand, three hundred fifty-one".