12005330465 has 4 divisors (see below), whose sum is σ = 14406396564. Its totient is φ = 9604264368.

The previous prime is 12005330429. The next prime is 12005330471. The reversal of 12005330465 is 56403350021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56403350021 = 577 ⋅97752773.

It can be written as a sum of positive squares in 2 ways, for example, as 5326518289 + 6678812176 = 72983^2 + 81724^2 .

It is a cyclic number.

It is not a de Polignac number, because 12005330465 - 2¹⁴ = 12005314081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200533042 + ... + 1200533051.

It is an arithmetic number, because the mean of its divisors is an integer number (3601599141).

Almost surely, 2^12005330465 is an apocalyptic number.

It is an amenable number.

12005330465 is a deficient number, since it is larger than the sum of its proper divisors (2401066099).

12005330465 is an equidigital number, since it uses as much as digits as its factorization.

12005330465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401066098.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 12005330465 its reverse (56403350021), we get a palindrome (68408680486).

The spelling of 12005330465 in words is "twelve billion, five million, three hundred thirty thousand, four hundred sixty-five".