12320660648156 has 72 divisors (see below), whose sum is σ = 25272953632080. Its totient is φ = 5240094757632.

The previous prime is 12320660648141. The next prime is 12320660648159. The reversal of 12320660648156 is 65184606602321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320660648159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13332320 + ... + 14226456.

It is an arithmetic number, because the mean of its divisors is an integer number (351013244890).

Almost surely, 2^{12320660648156} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12320660648156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12636476816040).

12320660648156 is an abundant number, since it is smaller than the sum of its proper divisors (12952292983924).

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

12320660648156 is a wasteful number, since it uses less digits than its factorization.

12320660648156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894691 (or 894682 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 12320660648156 in words is "twelve trillion, three hundred twenty billion, six hundred sixty million, six hundred forty-eight thousand, one hundred fifty-six".