12320655909720 has 64 divisors (see below), whose sum is σ = 37052339436000. Its totient is φ = 3277475202048.

The previous prime is 12320655909719. The next prime is 12320655909827. The reversal of 12320655909720 is 2790955602321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125466975 + ... + 125565134.

Almost surely, 2^{12320655909720} is an apocalyptic number.

12320655909720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320655909720 is an abundant number, since it is smaller than the sum of its proper divisors (24731683526280).

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

12320655909720 is a wasteful number, since it uses less digits than its factorization.

12320655909720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251032532 (or 251032528 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 51.

The spelling of 12320655909720 in words is "twelve trillion, three hundred twenty billion, six hundred fifty-five million, nine hundred nine thousand, seven hundred twenty".