517375006021 has 8 divisors (see below), whose sum is σ = 535458538080. Its totient is φ = 499307674992.

The previous prime is 517375006019. The next prime is 517375006061. The reversal of 517375006021 is 120600573715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 517375006021 - 2¹ = 517375006019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517375006061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3985255 + ... + 4113028.

It is an arithmetic number, because the mean of its divisors is an integer number (66932317260).

Almost surely, 2^517375006021 is an apocalyptic number.

It is an amenable number.

517375006021 is a deficient number, since it is larger than the sum of its proper divisors (18083532059).

517375006021 is a wasteful number, since it uses less digits than its factorization.

517375006021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8100515.

The product of its (nonzero) digits is 44100, while the sum is 37.

Adding to 517375006021 its reverse (120600573715), we get a palindrome (637975579736).

The spelling of 517375006021 in words is "five hundred seventeen billion, three hundred seventy-five million, six thousand, twenty-one".