16740453840 has 640 divisors, whose sum is σ = 61545775104. Its totient is φ = 3725568000.

The previous prime is 16740453839. The next prime is 16740453853. The reversal of 16740453840 is 4835404761.

It is a junction number, because it is equal to n+sod(n) for n = 16740453792 and 16740453801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 235781005 + ... + 235781075.

Almost surely, 2^16740453840 is an apocalyptic number.

16740453840 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 16740453840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30772887552).

16740453840 is an abundant number, since it is smaller than the sum of its proper divisors (44805321264).

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

16740453840 is a wasteful number, since it uses less digits than its factorization.

16740453840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 16740453840 in words is "sixteen billion, seven hundred forty million, four hundred fifty-three thousand, eight hundred forty".