12420453165 has 16 divisors (see below), whose sum is σ = 19875235200. Its totient is φ = 6623404992.

The previous prime is 12420453163. The next prime is 12420453187. The reversal of 12420453165 is 56135402421.

It is not a de Polignac number, because 12420453165 - 2¹ = 12420453163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420453163) 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, 81456 + ... + 177414.

It is an arithmetic number, because the mean of its divisors is an integer number (1242202200).

Almost surely, 2^12420453165 is an apocalyptic number.

12420453165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12420453165 is a deficient number, since it is larger than the sum of its proper divisors (7454782035).

12420453165 is an equidigital number, since it uses as much as digits as its factorization.

12420453165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104596.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 12420453165 its reverse (56135402421), we get a palindrome (68555855586).

The spelling of 12420453165 in words is "twelve billion, four hundred twenty million, four hundred fifty-three thousand, one hundred sixty-five".