12466642065 has 16 divisors (see below), whose sum is σ = 20033736000. Its totient is φ = 6619839552.

The previous prime is 12466642063. The next prime is 12466642093. The reversal of 12466642065 is 56024666421.

12466642065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12466642065 - 2¹ = 12466642063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12466642063) 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 15 ways as a sum of consecutive naturals, for example, 1811215 + ... + 1818084.

It is an arithmetic number, because the mean of its divisors is an integer number (1252108500).

Almost surely, 2^12466642065 is an apocalyptic number.

12466642065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12466642065 is a deficient number, since it is larger than the sum of its proper divisors (7567093935).

12466642065 is a wasteful number, since it uses less digits than its factorization.

12466642065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629536.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 12466642065 in words is "twelve billion, four hundred sixty-six million, six hundred forty-two thousand, sixty-five".