12045013817 has 2 divisors, whose sum is σ = 12045013818. Its totient is φ = 12045013816.

The previous prime is 12045013811. The next prime is 12045013829. The reversal of 12045013817 is 71831054021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12041989696 + 3024121 = 109736^2 + 1739^2 .

It is a cyclic number.

It is not a de Polignac number, because 12045013817 - 2²² = 12040819513 is a prime.

It is not a weakly prime, because it can be changed into another prime (12045013811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6022506908 + 6022506909.

It is an arithmetic number, because the mean of its divisors is an integer number (6022506909).

Almost surely, 2^12045013817 is an apocalyptic number.

It is an amenable number.

12045013817 is a deficient number, since it is larger than the sum of its proper divisors (1).

12045013817 is an equidigital number, since it uses as much as digits as its factorization.

12045013817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 32.

Adding to 12045013817 its reverse (71831054021), we get a palindrome (83876067838).

The spelling of 12045013817 in words is "twelve billion, forty-five million, thirteen thousand, eight hundred seventeen".