12330553681 has 4 divisors (see below), whose sum is σ = 12337720164. Its totient is φ = 12323387200.

The previous prime is 12330553649. The next prime is 12330553687. The reversal of 12330553681 is 18635503321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5646019600 + 6684534081 = 75140^2 + 81759^2 .

It is a cyclic number.

It is not a de Polignac number, because 12330553681 - 2⁵ = 12330553649 is a prime.

It is a super-2 number, since 2×12330553681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12330553681.

It is not an unprimeable number, because it can be changed into a prime (12330553687) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3580660 + ... + 3584101.

It is an arithmetic number, because the mean of its divisors is an integer number (3084430041).

Almost surely, 2^12330553681 is an apocalyptic number.

It is an amenable number.

12330553681 is a deficient number, since it is larger than the sum of its proper divisors (7166483).

12330553681 is an equidigital number, since it uses as much as digits as its factorization.

12330553681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7166482.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 12330553681 in words is "twelve billion, three hundred thirty million, five hundred fifty-three thousand, six hundred eighty-one".