720000000000 has 462 divisors, whose sum is σ = 2599841255349. Its totient is φ = 192000000000.

The previous prime is 719999999993. The next prime is 720000000001. The reversal of 720000000000 is 27.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 414447538176 + 305552461824 = 643776^2 + 552768^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=600000.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 720000000000.

It is not an unprimeable number, because it can be changed into a prime (720000000001) 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 32 ways as a sum of consecutive naturals, for example, 143999999998 + ... + 144000000002.

Almost surely, 2^720000000000 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 720000000000

720000000000 is an abundant number, since it is smaller than the sum of its proper divisors (1879841255349).

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

720000000000 is an frugal number, since it uses more digits than its factorization.

720000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 9.

Adding to 720000000000 its reverse (27), we get a palindrome (720000000027).

The spelling of 720000000000 in words is "seven hundred twenty billion", and thus it is an aban number.