17123971922 has 18 divisors (see below), whose sum is σ = 27290789253. Its totient is φ = 8056859232.

The previous prime is 17123971919. The next prime is 17123971927. The reversal of 17123971922 is 22917932171.

It can be written as a sum of positive squares in 2 ways, for example, as 15672285721 + 1451686201 = 125189^2 + 38101^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=92531.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17123971927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3143333 + ... + 3148775.

Almost surely, 2^17123971922 is an apocalyptic number.

17123971922 is a deficient number, since it is larger than the sum of its proper divisors (10166817331).

17123971922 is an frugal number, since it uses more digits than its factorization.

17123971922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10922 (or 5462 counting only the distinct ones).

The product of its digits is 95256, while the sum is 44.

The spelling of 17123971922 in words is "seventeen billion, one hundred twenty-three million, nine hundred seventy-one thousand, nine hundred twenty-two".