12091302720 has 504 divisors, whose sum is σ = 49435536384. Its totient is φ = 2703439872.

The previous prime is 12091302667. The next prime is 12091302721. The reversal of 12091302720 is 2720319021.

It is a tau number, because it is divible by the number of its divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12091302721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6631729 + ... + 6633551.

Almost surely, 2^12091302720 is an apocalyptic number.

12091302720 is a gapful number since it is divisible by the number (10) 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 12091302720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24717768192).

12091302720 is an abundant number, since it is smaller than the sum of its proper divisors (37344233664).

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

12091302720 is a wasteful number, since it uses less digits than its factorization.

12091302720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The spelling of 12091302720 in words is "twelve billion, ninety-one million, three hundred two thousand, seven hundred twenty".