16829743656 has 128 divisors (see below), whose sum is σ = 46356157440. Its totient is φ = 5049408000.

The previous prime is 16829743621. The next prime is 16829743661. The reversal of 16829743656 is 65634792861.

It is a junction number, because it is equal to n+sod(n) for n = 16829743596 and 16829743605.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17659276 + ... + 17660228.

It is an arithmetic number, because the mean of its divisors is an integer number (362157480).

Almost surely, 2^16829743656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16829743656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23178078720).

16829743656 is an abundant number, since it is smaller than the sum of its proper divisors (29526413784).

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

16829743656 is a wasteful number, since it uses less digits than its factorization.

16829743656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1563 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 57.

The spelling of 16829743656 in words is "sixteen billion, eight hundred twenty-nine million, seven hundred forty-three thousand, six hundred fifty-six".