7200720720000 has 640 divisors, whose sum is σ = 26621447160000. Its totient is φ = 1915508736000.

The previous prime is 7200720719977. The next prime is 7200720720001. The reversal of 7200720720000 is 270270027.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7200720720001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 935276151 + ... + 935283849.

Almost surely, 2^{7200720720000} 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 7200720720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13310723580000).

7200720720000 is an abundant number, since it is smaller than the sum of its proper divisors (19420726440000).

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

7200720720000 is an equidigital number, since it uses as much as digits as its factorization.

7200720720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8175 (or 8142 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

Adding to 7200720720000 its reverse (270270027), we get a palindrome (7200990990027).

The spelling of 7200720720000 in words is "seven trillion, two hundred billion, seven hundred twenty million, seven hundred twenty thousand".