720066723091 has 2 divisors, whose sum is σ = 720066723092. Its totient is φ = 720066723090.

The previous prime is 720066723031. The next prime is 720066723163. The reversal of 720066723091 is 190327660027.

It is a weak prime.

It is an emirp because it is prime and its reverse (190327660027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720066723091 - 2¹⁷ = 720066592019 is a prime.

It is not a weakly prime, because it can be changed into another prime (720066723031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360033361545 + 360033361546.

It is an arithmetic number, because the mean of its divisors is an integer number (360033361546).

Almost surely, 2^720066723091 is an apocalyptic number.

720066723091 is a deficient number, since it is larger than the sum of its proper divisors (1).

720066723091 is an equidigital number, since it uses as much as digits as its factorization.

720066723091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 720066723091 in words is "seven hundred twenty billion, sixty-six million, seven hundred twenty-three thousand, ninety-one".