517332500240 has 80 divisors (see below), whose sum is σ = 1206437293488. Its totient is φ = 206307606528.

The previous prime is 517332500227. The next prime is 517332500359. The reversal of 517332500240 is 42005233715.

It can be written as a sum of positive squares in 8 ways, for example, as 80295156496 + 437037343744 = 283364^2 + 661088^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 517332500197 and 517332500206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57393974 + ... + 57402986.

Almost surely, 2^517332500240 is an apocalyptic number.

It is an amenable number.

517332500240 is an abundant number, since it is smaller than the sum of its proper divisors (689104793248).

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

517332500240 is a wasteful number, since it uses less digits than its factorization.

517332500240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116 (or 11110 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

Adding to 517332500240 its reverse (42005233715), we get a palindrome (559337733955).

The spelling of 517332500240 in words is "five hundred seventeen billion, three hundred thirty-two million, five hundred thousand, two hundred forty".