12243651165 has 24 divisors (see below), whose sum is σ = 21225174360. Its totient is φ = 6529071744.

The previous prime is 12243651163. The next prime is 12243651191. The reversal of 12243651165 is 56115634221.

12243651165 is a `hidden beast` number, since 1 + 224 + 365 + 11 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1472947641 + 10770703524 = 38379^2 + 103782^2 .

It is not a de Polignac number, because 12243651165 - 2¹ = 12243651163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243651163) by changing a digit.

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, 457371 + ... + 483399.

It is an arithmetic number, because the mean of its divisors is an integer number (884382265).

Almost surely, 2^12243651165 is an apocalyptic number.

12243651165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12243651165 is a deficient number, since it is larger than the sum of its proper divisors (8981523195).

12243651165 is a wasteful number, since it uses less digits than its factorization.

12243651165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36493 (or 36490 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 12243651165 in words is "twelve billion, two hundred forty-three million, six hundred fifty-one thousand, one hundred sixty-five".