17217979411 has 4 divisors (see below), whose sum is σ = 17226620632. Its totient is φ = 17209338192.

The previous prime is 17217979403. The next prime is 17217979433. The reversal of 17217979411 is 11497971271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 17217979411 - 2³ = 17217979403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17217979451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317621 + ... + 4321606.

It is an arithmetic number, because the mean of its divisors is an integer number (4306655158).

Almost surely, 2^17217979411 is an apocalyptic number.

17217979411 is a deficient number, since it is larger than the sum of its proper divisors (8641221).

17217979411 is an equidigital number, since it uses as much as digits as its factorization.

17217979411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8641220.

The product of its digits is 222264, while the sum is 49.

The spelling of 17217979411 in words is "seventeen billion, two hundred seventeen million, nine hundred seventy-nine thousand, four hundred eleven".