17243212453 has 8 divisors (see below), whose sum is σ = 17718480248. Its totient is φ = 16768430784.

The previous prime is 17243212439. The next prime is 17243212477. The reversal of 17243212453 is 35421234271.

It can be written as a sum of positive squares in 4 ways, for example, as 7783121284 + 9460091169 = 88222^2 + 97263^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-17243212453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17243212403) 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, 49026 + ... + 192067.

It is an arithmetic number, because the mean of its divisors is an integer number (2214810031).

Almost surely, 2^17243212453 is an apocalyptic number.

It is an amenable number.

17243212453 is a deficient number, since it is larger than the sum of its proper divisors (475267795).

17243212453 is a wasteful number, since it uses less digits than its factorization.

17243212453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243063.

The product of its digits is 40320, while the sum is 34.

The spelling of 17243212453 in words is "seventeen billion, two hundred forty-three million, two hundred twelve thousand, four hundred fifty-three".