720081109441 has 8 divisors (see below), whose sum is σ = 721060616744. Its totient is φ = 719102119680.

The previous prime is 720081109417. The next prime is 720081109469. The reversal of 720081109441 is 144901180027.

It can be written as a sum of positive squares in 4 ways, for example, as 143088949441 + 576992160000 = 378271^2 + 759600^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 720081109441 - 2⁷ = 720081109313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720081109441.

It is not an unprimeable number, because it can be changed into a prime (720081109481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2697031 + ... + 2951971.

It is an arithmetic number, because the mean of its divisors is an integer number (90132577093).

Almost surely, 2^720081109441 is an apocalyptic number.

It is an amenable number.

720081109441 is a deficient number, since it is larger than the sum of its proper divisors (979507303).

720081109441 is a wasteful number, since it uses less digits than its factorization.

720081109441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258771.

The product of its (nonzero) digits is 16128, while the sum is 37.

Adding to 720081109441 its reverse (144901180027), we get a palindrome (864982289468).

The spelling of 720081109441 in words is "seven hundred twenty billion, eighty-one million, one hundred nine thousand, four hundred forty-one".