17235128497 has 6 divisors (see below), whose sum is σ = 17809035954. Its totient is φ = 16679155680.

The previous prime is 17235128483. The next prime is 17235128539. The reversal of 17235128497 is 79482153271.

It can be written as a sum of positive squares in only one way, i.e., 15871968256 + 1363160241 = 125984^2 + 36921^2 .

It is not a de Polignac number, because 17235128497 - 2⁷ = 17235128369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17235128497.

It is not an unprimeable number, because it can be changed into a prime (17235128797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8966328 + ... + 8968249.

It is an arithmetic number, because the mean of its divisors is an integer number (2968172659).

Almost surely, 2^17235128497 is an apocalyptic number.

It is an amenable number.

17235128497 is a deficient number, since it is larger than the sum of its proper divisors (573907457).

17235128497 is an equidigital number, since it uses as much as digits as its factorization.

17235128497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17934639 (or 17934608 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The spelling of 17235128497 in words is "seventeen billion, two hundred thirty-five million, one hundred twenty-eight thousand, four hundred ninety-seven".