12165344430255 has 24 divisors (see below), whose sum is σ = 21295375208640. Its totient is φ = 6423944251200.

The previous prime is 12165344430227. The next prime is 12165344430269. The reversal of 12165344430255 is 55203444356121.

12165344430255 is a `hidden beast` number, since 1 + 2 + 16 + 5 + 344 + 43 + 0 + 255 = 666.

It is not a de Polignac number, because 12165344430255 - 2¹¹ = 12165344428207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12165344430255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1338317175 + ... + 1338326264.

It is an arithmetic number, because the mean of its divisors is an integer number (887307300360).

Almost surely, 2^{12165344430255} is an apocalyptic number.

12165344430255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12165344430255 is a deficient number, since it is larger than the sum of its proper divisors (9130030778385).

12165344430255 is a wasteful number, since it uses less digits than its factorization.

12165344430255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676643551 (or 2676643548 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

Adding to 12165344430255 its reverse (55203444356121), we get a palindrome (67368788786376).

The spelling of 12165344430255 in words is "twelve trillion, one hundred sixty-five billion, three hundred forty-four million, four hundred thirty thousand, two hundred fifty-five".