17199841920 has 128 divisors (see below), whose sum is σ = 55065312000. Its totient is φ = 4566478848.

The previous prime is 17199841909. The next prime is 17199841933. The reversal of 17199841920 is 2914899171.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420121 + ... + 459239.

It is an arithmetic number, because the mean of its divisors is an integer number (430197750).

Almost surely, 2^17199841920 is an apocalyptic number.

17199841920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17199841920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27532656000).

17199841920 is an abundant number, since it is smaller than the sum of its proper divisors (37865470080).

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

17199841920 is a wasteful number, since it uses less digits than its factorization.

17199841920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39370 (or 39358 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 17199841920 in words is "seventeen billion, one hundred ninety-nine million, eight hundred forty-one thousand, nine hundred twenty".