720228018050 has 54 divisors (see below), whose sum is σ = 1347742886907. Its totient is φ = 286355732480.

The previous prime is 720228018043. The next prime is 720228018061. The reversal of 720228018050 is 50810822027.

It can be written as a sum of positive squares in 5 ways, for example, as 670189459801 + 50038558249 = 818651^2 + 223693^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=600095.

It is a super-2 number, since 2×720228018050² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 720228018050.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1542243917 + ... + 1542244383.

Almost surely, 2^720228018050 is an apocalyptic number.

720228018050 is a deficient number, since it is larger than the sum of its proper divisors (627514868857).

720228018050 is an frugal number, since it uses more digits than its factorization.

720228018050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 720228018050 in words is "seven hundred twenty billion, two hundred twenty-eight million, eighteen thousand, fifty".