12065664663645 has 8 divisors (see below), whose sum is σ = 19305063461856. Its totient is φ = 6435021153936.

The previous prime is 12065664663623. The next prime is 12065664663677. The reversal of 12065664663645 is 54636646656021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12065664663645 - 2⁶ = 12065664663581 is a prime.

It is a super-2 number, since 2×12065664663645² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402188822107 + ... + 402188822136.

It is an arithmetic number, because the mean of its divisors is an integer number (2413132932732).

Almost surely, 2^{12065664663645} is an apocalyptic number.

12065664663645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12065664663645 is a deficient number, since it is larger than the sum of its proper divisors (7239398798211).

12065664663645 is an equidigital number, since it uses as much as digits as its factorization.

12065664663645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804377644251.

The product of its (nonzero) digits is 111974400, while the sum is 60.

The spelling of 12065664663645 in words is "twelve trillion, sixty-five billion, six hundred sixty-four million, six hundred sixty-three thousand, six hundred forty-five".