501230505040 has 40 divisors (see below), whose sum is σ = 1165781088360. Its totient is φ = 200419915776.

The previous prime is 501230505011. The next prime is 501230505053. The reversal of 501230505040 is 40505032105.

It can be written as a sum of positive squares in 4 ways, for example, as 71571230784 + 429659274256 = 267528^2 + 655484^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 501230504996 and 501230505014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905925 + ... + 1350244.

It is an arithmetic number, because the mean of its divisors is an integer number (29144527209).

Almost surely, 2^501230505040 is an apocalyptic number.

It is an amenable number.

501230505040 is an abundant number, since it is smaller than the sum of its proper divisors (664550583320).

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

501230505040 is a wasteful number, since it uses less digits than its factorization.

501230505040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258959 (or 2258953 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

Adding to 501230505040 its reverse (40505032105), we get a palindrome (541735537145).

The spelling of 501230505040 in words is "five hundred one billion, two hundred thirty million, five hundred five thousand, forty".