16436343680 has 128 divisors (see below), whose sum is σ = 42242688000. Its totient is φ = 6095775744.

The previous prime is 16436343673. The next prime is 16436343701. The reversal of 16436343680 is 8634363461.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557141 + ... + 585899.

It is an arithmetic number, because the mean of its divisors is an integer number (330021000).

Almost surely, 2^16436343680 is an apocalyptic number.

16436343680 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 16436343680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21121344000).

16436343680 is an abundant number, since it is smaller than the sum of its proper divisors (25806344320).

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

16436343680 is a wasteful number, since it uses less digits than its factorization.

16436343680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28844 (or 28832 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 16436343680 in words is "sixteen billion, four hundred thirty-six million, three hundred forty-three thousand, six hundred eighty".