12466466466421 has 4 divisors (see below), whose sum is σ = 13599781599744. Its totient is φ = 11333151333100.

The previous prime is 12466466466409. The next prime is 12466466466449.

12466466466421 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12466466466421 - 2¹⁵ = 12466466433653 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 (12466466466481) 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, 566657566645 + ... + 566657566666.

It is an arithmetic number, because the mean of its divisors is an integer number (3399945399936).

Almost surely, 2^{12466466466421} is an apocalyptic number.

12466466466421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12466466466421 is a deficient number, since it is larger than the sum of its proper divisors (1133315133323).

12466466466421 is a wasteful number, since it uses less digits than its factorization.

12466466466421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133315133322.

The product of its digits is 47775744, while the sum is 58.

The spelling of 12466466466421 in words is "twelve trillion, four hundred sixty-six billion, four hundred sixty-six million, four hundred sixty-six thousand, four hundred twenty-one".