12443542654665 has 16 divisors (see below), whose sum is σ = 20333278211328. Its totient is φ = 6495352761216.

The previous prime is 12443542654649. The next prime is 12443542654687. The reversal of 12443542654665 is 56645624534421.

12443542654665 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 12443542654665 - 2⁴ = 12443542654649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8825206852 + ... + 8825208261.

It is an arithmetic number, because the mean of its divisors is an integer number (1270829888208).

Almost surely, 2^{12443542654665} is an apocalyptic number.

12443542654665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12443542654665 is a deficient number, since it is larger than the sum of its proper divisors (7889735556663).

12443542654665 is a wasteful number, since it uses less digits than its factorization.

12443542654665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17650415168.

The product of its digits is 82944000, while the sum is 57.

The spelling of 12443542654665 in words is "twelve trillion, four hundred forty-three billion, five hundred forty-two million, six hundred fifty-four thousand, six hundred sixty-five".