720756341273 has 4 divisors (see below), whose sum is σ = 728854727220. Its totient is φ = 712657955328.

The previous prime is 720756341257. The next prime is 720756341293. The reversal of 720756341273 is 372143657027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 372143657027 = 65407 ⋅5689661.

It can be written as a sum of positive squares in 2 ways, for example, as 517749324304 + 203007016969 = 719548^2 + 450563^2 .

It is a cyclic number.

It is not a de Polignac number, because 720756341273 - 2⁴ = 720756341257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720756341233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4049192840 + ... + 4049193017.

It is an arithmetic number, because the mean of its divisors is an integer number (182213681805).

Almost surely, 2^720756341273 is an apocalyptic number.

It is an amenable number.

720756341273 is a deficient number, since it is larger than the sum of its proper divisors (8098385947).

720756341273 is an equidigital number, since it uses as much as digits as its factorization.

720756341273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8098385946.

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 720756341273 in words is "seven hundred twenty billion, seven hundred fifty-six million, three hundred forty-one thousand, two hundred seventy-three".