12664054553 has 4 divisors (see below), whose sum is σ = 13330583760. Its totient is φ = 11997525348.

The previous prime is 12664054549. The next prime is 12664054567. The reversal of 12664054553 is 35545046621.

It is a happy number.

12664054553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12664054553 - 2² = 12664054549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12664054553.

It is not an unprimeable number, because it can be changed into a prime (12664053553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333264575 + ... + 333264612.

It is an arithmetic number, because the mean of its divisors is an integer number (3332645940).

Almost surely, 2^12664054553 is an apocalyptic number.

It is an amenable number.

12664054553 is a deficient number, since it is larger than the sum of its proper divisors (666529207).

12664054553 is an equidigital number, since it uses as much as digits as its factorization.

12664054553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666529206.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 12664054553 in words is "twelve billion, six hundred sixty-four million, fifty-four thousand, five hundred fifty-three".