517124130137453 has 4 divisors (see below), whose sum is σ = 517167091363260. Its totient is φ = 517081168911648.

The previous prime is 517124130137431. The next prime is 517124130137473. The reversal of 517124130137453 is 354731031421715.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89971257561124 + 427152872576329 = 9485318^2 + 20667677^2 .

It is a cyclic number.

It is not a de Polignac number, because 517124130137453 - 2³⁴ = 517106950268269 is a prime.

It is a super-2 number, since 2×517124130137453² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 517124130137398 and 517124130137407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517124130137473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21480594848 + ... + 21480618921.

It is an arithmetic number, because the mean of its divisors is an integer number (129291772840815).

Almost surely, 2^{517124130137453} is an apocalyptic number.

It is an amenable number.

517124130137453 is a deficient number, since it is larger than the sum of its proper divisors (42961225807).

517124130137453 is a wasteful number, since it uses less digits than its factorization.

517124130137453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42961225806.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 517124130137453 in words is "five hundred seventeen trillion, one hundred twenty-four billion, one hundred thirty million, one hundred thirty-seven thousand, four hundred fifty-three".