720213617243 has 2 divisors, whose sum is σ = 720213617244. Its totient is φ = 720213617242.

The previous prime is 720213617237. The next prime is 720213617273. The reversal of 720213617243 is 342716312027.

720213617243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720213617243 - 2²² = 720209422939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720213617197 and 720213617206.

It is not a weakly prime, because it can be changed into another prime (720213617273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360106808621 + 360106808622.

It is an arithmetic number, because the mean of its divisors is an integer number (360106808622).

Almost surely, 2^720213617243 is an apocalyptic number.

720213617243 is a deficient number, since it is larger than the sum of its proper divisors (1).

720213617243 is an equidigital number, since it uses as much as digits as its factorization.

720213617243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 720213617243 in words is "seven hundred twenty billion, two hundred thirteen million, six hundred seventeen thousand, two hundred forty-three".