17421350609 has 8 divisors (see below), whose sum is σ = 18828225192. Its totient is φ = 16024014720.

The previous prime is 17421350563. The next prime is 17421350659. The reversal of 17421350609 is 90605312471.

It can be written as a sum of positive squares in 4 ways, for example, as 18464209 + 17402886400 = 4297^2 + 131920^2 .

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 17421350609 - 2³² = 13126383313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17421350659) 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, 2380874 + ... + 2388179.

It is an arithmetic number, because the mean of its divisors is an integer number (2353528149).

Almost surely, 2^17421350609 is an apocalyptic number.

It is an amenable number.

17421350609 is a deficient number, since it is larger than the sum of its proper divisors (1406874583).

17421350609 is a wasteful number, since it uses less digits than its factorization.

17421350609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769347.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 17421350609 in words is "seventeen billion, four hundred twenty-one million, three hundred fifty thousand, six hundred nine".