12666463455 has 16 divisors (see below), whose sum is σ = 20278836864. Its totient is φ = 6751282080.

The previous prime is 12666463451. The next prime is 12666463457. The reversal of 12666463455 is 55436466621.

It is not a de Polignac number, because 12666463455 - 2² = 12666463451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666463451) 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 15 ways as a sum of consecutive naturals, for example, 235101 + ... + 283910.

It is an arithmetic number, because the mean of its divisors is an integer number (1267427304).

Almost surely, 2^12666463455 is an apocalyptic number.

12666463455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12666463455 is a deficient number, since it is larger than the sum of its proper divisors (7612373409).

12666463455 is a wasteful number, since it uses less digits than its factorization.

12666463455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520646.

The product of its digits is 3110400, while the sum is 48.

The spelling of 12666463455 in words is "twelve billion, six hundred sixty-six million, four hundred sixty-three thousand, four hundred fifty-five".