12320666657321 has 8 divisors (see below), whose sum is σ = 14148133960800. Its totient is φ = 10611100470240.

The previous prime is 12320666657249. The next prime is 12320666657329. The reversal of 12320666657321 is 12375666602321.

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

It is a cyclic number.

It is not a de Polignac number, because 12320666657321 - 2²⁶ = 12320599548457 is a prime.

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 12320666657321.

It is not an unprimeable number, because it can be changed into a prime (12320666657329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29475278876 + ... + 29475279293.

It is an arithmetic number, because the mean of its divisors is an integer number (1768516745100).

Almost surely, 2^{12320666657321} is an apocalyptic number.

12320666657321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12320666657321 is a deficient number, since it is larger than the sum of its proper divisors (1827467303479).

12320666657321 is a wasteful number, since it uses less digits than its factorization.

12320666657321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58950558199.

The product of its (nonzero) digits is 3265920, while the sum is 50.

The spelling of 12320666657321 in words is "twelve trillion, three hundred twenty billion, six hundred sixty-six million, six hundred fifty-seven thousand, three hundred twenty-one".