501303512720 has 20 divisors (see below), whose sum is σ = 1165530667260. Its totient is φ = 200521405056.

The previous prime is 501303512707. The next prime is 501303512737. The reversal of 501303512720 is 27215303105.

It can be written as a sum of positive squares in 2 ways, for example, as 53298186496 + 448005326224 = 230864^2 + 669332^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×501303512720² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133146875 + ... + 3133147034.

It is an arithmetic number, because the mean of its divisors is an integer number (58276533363).

Almost surely, 2^501303512720 is an apocalyptic number.

It is an amenable number.

501303512720 is an abundant number, since it is smaller than the sum of its proper divisors (664227154540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501303512720 is a wasteful number, since it uses less digits than its factorization.

501303512720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266293922 (or 6266293916 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

Adding to 501303512720 its reverse (27215303105), we get a palindrome (528518815825).

The spelling of 501303512720 in words is "five hundred one billion, three hundred three million, five hundred twelve thousand, seven hundred twenty".