722241741985 has 4 divisors (see below), whose sum is σ = 866690090388. Its totient is φ = 577793393584.

The previous prime is 722241741929. The next prime is 722241742051. The reversal of 722241741985 is 589147142227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120208517521 + 602033224464 = 346711^2 + 775908^2 .

It is a cyclic number.

It is not a de Polignac number, because 722241741985 - 2⁷ = 722241741857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72224174194 + ... + 72224174203.

It is an arithmetic number, because the mean of its divisors is an integer number (216672522597).

Almost surely, 2^722241741985 is an apocalyptic number.

It is an amenable number.

722241741985 is a deficient number, since it is larger than the sum of its proper divisors (144448348403).

722241741985 is a wasteful number, since it uses less digits than its factorization.

722241741985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144448348402.

The product of its digits is 2257920, while the sum is 52.

The spelling of 722241741985 in words is "seven hundred twenty-two billion, two hundred forty-one million, seven hundred forty-one thousand, nine hundred eighty-five".