17900016834 has 80 divisors (see below), whose sum is σ = 42654434688. Its totient is φ = 5005286496.

The previous prime is 17900016821. The next prime is 17900016853. The reversal of 17900016834 is 43861000971.

It is a junction number, because it is equal to n+sod(n) for n = 17900016792 and 17900016801.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 663864 + ... + 690300.

Almost surely, 2^17900016834 is an apocalyptic number.

17900016834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 17900016834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21327217344).

17900016834 is an abundant number, since it is smaller than the sum of its proper divisors (24754417854).

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

17900016834 is an equidigital number, since it uses as much as digits as its factorization.

17900016834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26517 (or 26496 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 17900016834 in words is "seventeen billion, nine hundred million, sixteen thousand, eight hundred thirty-four".