12320647628464 has 60 divisors (see below), whose sum is σ = 27771145673544. Its totient is φ = 5279793964032.

The previous prime is 12320647628453. The next prime is 12320647628477. The reversal of 12320647628464 is 46482674602321.

It is a happy 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 11 ways as a sum of consecutive naturals, for example, 7912224 + ... + 9340480.

Almost surely, 2^{12320647628464} is an apocalyptic number.

12320647628464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12320647628464 is an abundant number, since it is smaller than the sum of its proper divisors (15450498045080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12320647628464 is a wasteful number, since it uses less digits than its factorization.

12320647628464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439282 (or 1439269 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 55.

The spelling of 12320647628464 in words is "twelve trillion, three hundred twenty billion, six hundred forty-seven million, six hundred twenty-eight thousand, four hundred sixty-four".