12445421451 has 8 divisors (see below), whose sum is σ = 16594415424. Its totient is φ = 8296687560.

The previous prime is 12445421437. The next prime is 12445421497. The reversal of 12445421451 is 15412454421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12445421451 - 2⁵ = 12445421419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12445421431) 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 7 ways as a sum of consecutive naturals, for example, 131440 + ... + 205346.

It is an arithmetic number, because the mean of its divisors is an integer number (2074301928).

Almost surely, 2^12445421451 is an apocalyptic number.

12445421451 is a deficient number, since it is larger than the sum of its proper divisors (4148993973).

12445421451 is an equidigital number, since it uses as much as digits as its factorization.

12445421451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130041.

The product of its digits is 25600, while the sum is 33.

Adding to 12445421451 its reverse (15412454421), we get a palindrome (27857875872).

The spelling of 12445421451 in words is "twelve billion, four hundred forty-five million, four hundred twenty-one thousand, four hundred fifty-one".