12464436420451 has 4 divisors (see below), whose sum is σ = 12465321252912. Its totient is φ = 12463551587992.

The previous prime is 12464436420437. The next prime is 12464436420461. The reversal of 12464436420451 is 15402463446421.

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

It is a cyclic number.

It is not a de Polignac number, because 12464436420451 - 2⁴¹ = 10265413164899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12464436420461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442395100 + ... + 442423273.

It is an arithmetic number, because the mean of its divisors is an integer number (3116330313228).

Almost surely, 2^{12464436420451} is an apocalyptic number.

12464436420451 is a deficient number, since it is larger than the sum of its proper divisors (884832461).

12464436420451 is an equidigital number, since it uses as much as digits as its factorization.

12464436420451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884832460.

The product of its (nonzero) digits is 2211840, while the sum is 46.

Adding to 12464436420451 its reverse (15402463446421), we get a palindrome (27866899866872).

The spelling of 12464436420451 in words is "twelve trillion, four hundred sixty-four billion, four hundred thirty-six million, four hundred twenty thousand, four hundred fifty-one".