12321026525645 has 16 divisors (see below), whose sum is σ = 14806794919680. Its totient is φ = 9842453769600.

The previous prime is 12321026525629. The next prime is 12321026525657. The reversal of 12321026525645 is 54652562012321.

It is a happy number.

It is not a de Polignac number, because 12321026525645 - 2⁴ = 12321026525629 is a prime.

It is a super-3 number, since 3×12321026525645³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12321026525596 and 12321026525605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11962505 + ... + 12951585.

It is an arithmetic number, because the mean of its divisors is an integer number (925424682480).

Almost surely, 2^{12321026525645} is an apocalyptic number.

It is an amenable number.

12321026525645 is a deficient number, since it is larger than the sum of its proper divisors (2485768394035).

12321026525645 is an equidigital number, since it uses as much as digits as its factorization.

12321026525645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992716.

The product of its (nonzero) digits is 864000, while the sum is 44.

Adding to 12321026525645 its reverse (54652562012321), we get a palindrome (66973588537966).

The spelling of 12321026525645 in words is "twelve trillion, three hundred twenty-one billion, twenty-six million, five hundred twenty-five thousand, six hundred forty-five".