16966344640 has 224 divisors, whose sum is σ = 48329478144. Its totient is φ = 5550612480.

The previous prime is 16966344631. The next prime is 16966344677. The reversal of 16966344640 is 4644366961.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

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, 5067447 + ... + 5070793.

Almost surely, 2^16966344640 is an apocalyptic number.

16966344640 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 16966344640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24164739072).

16966344640 is an abundant number, since it is smaller than the sum of its proper divisors (31363133504).

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

16966344640 is a wasteful number, since it uses less digits than its factorization.

16966344640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475 (or 3465 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 16966344640 in words is "sixteen billion, nine hundred sixty-six million, three hundred forty-four thousand, six hundred forty".