12354210665 has 16 divisors (see below), whose sum is σ = 14869008000. Its totient is φ = 9854107392.

The previous prime is 12354210653. The next prime is 12354210667. The reversal of 12354210665 is 56601245321.

12354210665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12354210665 - 2²⁸ = 12085775209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12354210667) 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, 3743186 + ... + 3746484.

It is an arithmetic number, because the mean of its divisors is an integer number (929313000).

Almost surely, 2^12354210665 is an apocalyptic number.

It is an amenable number.

12354210665 is a deficient number, since it is larger than the sum of its proper divisors (2514797335).

12354210665 is a wasteful number, since it uses less digits than its factorization.

12354210665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 12354210665 its reverse (56601245321), we get a palindrome (68955455986).

The spelling of 12354210665 in words is "twelve billion, three hundred fifty-four million, two hundred ten thousand, six hundred sixty-five".