720716617043 has 2 divisors, whose sum is σ = 720716617044. Its totient is φ = 720716617042.

The previous prime is 720716617021. The next prime is 720716617109. The reversal of 720716617043 is 340716617027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720716617043 - 2¹⁶ = 720716551507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720716616985 and 720716617003.

It is not a weakly prime, because it can be changed into another prime (720716817043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360358308521 + 360358308522.

It is an arithmetic number, because the mean of its divisors is an integer number (360358308522).

Almost surely, 2^720716617043 is an apocalyptic number.

720716617043 is a deficient number, since it is larger than the sum of its proper divisors (1).

720716617043 is an equidigital number, since it uses as much as digits as its factorization.

720716617043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 720716617043 in words is "seven hundred twenty billion, seven hundred sixteen million, six hundred seventeen thousand, forty-three".