16835217126 has 128 divisors (see below), whose sum is σ = 43953186816. Its totient is φ = 4177198080.

The previous prime is 16835217071. The next prime is 16835217143. The reversal of 16835217126 is 62171253861.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 755050 + ... + 777026.

It is an arithmetic number, because the mean of its divisors is an integer number (343384272).

Almost surely, 2^16835217126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16835217126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21976593408).

16835217126 is an abundant number, since it is smaller than the sum of its proper divisors (27117969690).

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

16835217126 is a wasteful number, since it uses less digits than its factorization.

16835217126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22086.

The product of its digits is 120960, while the sum is 42.

The spelling of 16835217126 in words is "sixteen billion, eight hundred thirty-five million, two hundred seventeen thousand, one hundred twenty-six".