17218173945473 has 16 divisors (see below), whose sum is σ = 18032181903360. Its totient is φ = 16422065226000.

The previous prime is 17218173945461. The next prime is 17218173945487. The reversal of 17218173945473 is 37454937181271.

It is a cyclic number.

It is not a de Polignac number, because 17218173945473 - 2¹⁶ = 17218173879937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17218173948473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13887053 + ... + 15076026.

It is an arithmetic number, because the mean of its divisors is an integer number (1127011368960).

Almost surely, 2^{17218173945473} is an apocalyptic number.

It is an amenable number.

17218173945473 is a deficient number, since it is larger than the sum of its proper divisors (814007957887).

17218173945473 is a wasteful number, since it uses less digits than its factorization.

17218173945473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28963388.

The product of its digits is 35562240, while the sum is 62.

The spelling of 17218173945473 in words is "seventeen trillion, two hundred eighteen billion, one hundred seventy-three million, nine hundred forty-five thousand, four hundred seventy-three".