517797128017 has 8 divisors (see below), whose sum is σ = 557718418880. Its totient is φ = 477888800400.

The previous prime is 517797127993. The next prime is 517797128029. The reversal of 517797128017 is 710821797715.

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 517797128017 - 2²³ = 517788739409 is a prime.

It is a super-2 number, since 2×517797128017² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517797128077) 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, 3157767 + ... + 3317692.

It is an arithmetic number, because the mean of its divisors is an integer number (69714802360).

Almost surely, 2^517797128017 is an apocalyptic number.

It is an amenable number.

517797128017 is a deficient number, since it is larger than the sum of its proper divisors (39921290863).

517797128017 is a wasteful number, since it uses less digits than its factorization.

517797128017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481623.

The product of its (nonzero) digits is 1728720, while the sum is 55.

The spelling of 517797128017 in words is "five hundred seventeen billion, seven hundred ninety-seven million, one hundred twenty-eight thousand, seventeen".