16961426928 has 120 divisors (see below), whose sum is σ = 49789366848. Its totient is φ = 5383881216.

The previous prime is 16961426917. The next prime is 16961426947. The reversal of 16961426928 is 82962416961.

16961426928 is a `hidden beast` number, since 16 + 9 + 614 + 2 + 6 + 9 + 2 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216550 + ... + 284282.

Almost surely, 2^16961426928 is an apocalyptic number.

16961426928 is a gapful number since it is divisible by the number (18) 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 16961426928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24894683424).

16961426928 is an abundant number, since it is smaller than the sum of its proper divisors (32827939920).

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

16961426928 is a wasteful number, since it uses less digits than its factorization.

16961426928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67831 (or 67822 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 16961426928 in words is "sixteen billion, nine hundred sixty-one million, four hundred twenty-six thousand, nine hundred twenty-eight".