12666035465503 has 16 divisors (see below), whose sum is σ = 14611016597760. Its totient is φ = 10754944857216.

The previous prime is 12666035465407. The next prime is 12666035465509. The reversal of 12666035465503 is 30556453066621.

12666035465503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12666035465503 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 (12666035465509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54755575 + ... + 54986407.

It is an arithmetic number, because the mean of its divisors is an integer number (913188537360).

Almost surely, 2^{12666035465503} is an apocalyptic number.

12666035465503 is a deficient number, since it is larger than the sum of its proper divisors (1944981132257).

12666035465503 is a wasteful number, since it uses less digits than its factorization.

12666035465503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304206.

The product of its (nonzero) digits is 11664000, while the sum is 52.

The spelling of 12666035465503 in words is "twelve trillion, six hundred sixty-six billion, thirty-five million, four hundred sixty-five thousand, five hundred three".