517345427631 has 16 divisors (see below), whose sum is σ = 695034063360. Its totient is φ = 342286559520.

The previous prime is 517345427579. The next prime is 517345427663. The reversal of 517345427631 is 136724543715.

It is not a de Polignac number, because 517345427631 - 2⁶ = 517345427567 is a prime.

It is a super-2 number, since 2×517345427631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517345427671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997035 + ... + 1424348.

It is an arithmetic number, because the mean of its divisors is an integer number (43439628960).

Almost surely, 2^517345427631 is an apocalyptic number.

517345427631 is a deficient number, since it is larger than the sum of its proper divisors (177688635729).

517345427631 is a wasteful number, since it uses less digits than its factorization.

517345427631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421926.

The product of its digits is 2116800, while the sum is 48.

The spelling of 517345427631 in words is "five hundred seventeen billion, three hundred forty-five million, four hundred twenty-seven thousand, six hundred thirty-one".