12320533402565 has 8 divisors (see below), whose sum is σ = 14784669514368. Its totient is φ = 9856407101200.

The previous prime is 12320533402519. The next prime is 12320533402589. The reversal of 12320533402565 is 56520433502321.

It is a happy number.

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

It is not a de Polignac number, because 12320533402565 - 2¹⁴ = 12320533386181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672224 + ... + 5009286.

It is an arithmetic number, because the mean of its divisors is an integer number (1848083689296).

Almost surely, 2^{12320533402565} is an apocalyptic number.

It is an amenable number.

12320533402565 is a deficient number, since it is larger than the sum of its proper divisors (2464136111803).

12320533402565 is an equidigital number, since it uses as much as digits as its factorization.

12320533402565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905219.

The product of its (nonzero) digits is 648000, while the sum is 41.

Adding to 12320533402565 its reverse (56520433502321), we get a palindrome (68840966904886).

The spelling of 12320533402565 in words is "twelve trillion, three hundred twenty billion, five hundred thirty-three million, four hundred two thousand, five hundred sixty-five".