12245535720 has 256 divisors, whose sum is σ = 46873728000. Its totient is φ = 2812320000.

The previous prime is 12245535719. The next prime is 12245535763. The reversal of 12245535720 is 2753554221.

12245535720 is a `hidden beast` number, since 12 + 2 + 45 + 535 + 72 + 0 = 666.

12245535720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198595 + ... + 252845.

It is an arithmetic number, because the mean of its divisors is an integer number (183100500).

Almost surely, 2^12245535720 is an apocalyptic number.

12245535720 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 12245535720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23436864000).

12245535720 is an abundant number, since it is smaller than the sum of its proper divisors (34628192280).

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

12245535720 is a wasteful number, since it uses less digits than its factorization.

12245535720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54301 (or 54291 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 12245535720 in words is "twelve billion, two hundred forty-five million, five hundred thirty-five thousand, seven hundred twenty".