12097180665 has 48 divisors (see below), whose sum is σ = 21086157456. Its totient is φ = 6415718400.

The previous prime is 12097180663. The next prime is 12097180679. The reversal of 12097180665 is 56608179021.

12097180665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 559842921 + 11537337744 = 23661^2 + 107412^2 .

It is not a de Polignac number, because 12097180665 - 2¹ = 12097180663 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 12097180665.

It is not an unprimeable number, because it can be changed into a prime (12097180663) 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 47 ways as a sum of consecutive naturals, for example, 11847855 + ... + 11848875.

It is an arithmetic number, because the mean of its divisors is an integer number (439294947).

Almost surely, 2^12097180665 is an apocalyptic number.

12097180665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12097180665 is a deficient number, since it is larger than the sum of its proper divisors (8988976791).

12097180665 is a wasteful number, since it uses less digits than its factorization.

12097180665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250 (or 2247 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 12097180665 in words is "twelve billion, ninety-seven million, one hundred eighty thousand, six hundred sixty-five".