12252243163645 has 16 divisors (see below), whose sum is σ = 14717268453888. Its totient is φ = 9792080098560.

The previous prime is 12252243163637. The next prime is 12252243163663. The reversal of 12252243163645 is 54636134225221.

It is a happy number.

It is not a de Polignac number, because 12252243163645 - 2³ = 12252243163637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12252243163595 and 12252243163604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29566872 + ... + 29978398.

It is an arithmetic number, because the mean of its divisors is an integer number (919829278368).

Almost surely, 2^{12252243163645} is an apocalyptic number.

It is an amenable number.

12252243163645 is a deficient number, since it is larger than the sum of its proper divisors (2465025290243).

12252243163645 is a wasteful number, since it uses less digits than its factorization.

12252243163645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417420.

The product of its digits is 2073600, while the sum is 46.

Adding to 12252243163645 its reverse (54636134225221), we get a palindrome (66888377388866).

The spelling of 12252243163645 in words is "twelve trillion, two hundred fifty-two billion, two hundred forty-three million, one hundred sixty-three thousand, six hundred forty-five".