17243915172 has 24 divisors (see below), whose sum is σ = 43893602592. Its totient is φ = 5225428800.

The previous prime is 17243915149. The next prime is 17243915179. The reversal of 17243915172 is 27151934271.

It is a super-2 number, since 2×17243915172² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17243915179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65317729 + ... + 65317992.

It is an arithmetic number, because the mean of its divisors is an integer number (1828900108).

Almost surely, 2^17243915172 is an apocalyptic number.

17243915172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17243915172 is an abundant number, since it is smaller than the sum of its proper divisors (26649687420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17243915172 is a wasteful number, since it uses less digits than its factorization.

17243915172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130635739 (or 130635737 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The spelling of 17243915172 in words is "seventeen billion, two hundred forty-three million, nine hundred fifteen thousand, one hundred seventy-two".