12720782592 has 648 divisors, whose sum is σ = 46388825280. Its totient is φ = 3427522560.

The previous prime is 12720782551. The next prime is 12720782621. The reversal of 12720782592 is 29528702721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 179165917 + ... + 179165987.

Almost surely, 2^12720782592 is an apocalyptic number.

12720782592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12720782592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23194412640).

12720782592 is an abundant number, since it is smaller than the sum of its proper divisors (33668042688).

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

12720782592 is an equidigital number, since it uses as much as digits as its factorization.

12720782592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 12720782592 in words is "twelve billion, seven hundred twenty million, seven hundred eighty-two thousand, five hundred ninety-two".