16784421540 has 48 divisors (see below), whose sum is σ = 47063540160. Its totient is φ = 4469449600.

The previous prime is 16784421523. The next prime is 16784421551. The reversal of 16784421540 is 4512448761.

It is a junction number, because it is equal to n+sod(n) for n = 16784421492 and 16784421501.

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 15 ways as a sum of consecutive naturals, for example, 157470 + ... + 241589.

It is an arithmetic number, because the mean of its divisors is an integer number (980490420).

Almost surely, 2^16784421540 is an apocalyptic number.

16784421540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16784421540 is an abundant number, since it is smaller than the sum of its proper divisors (30279118620).

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

16784421540 is a wasteful number, since it uses less digits than its factorization.

16784421540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399772 (or 399770 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 16784421540 in words is "sixteen billion, seven hundred eighty-four million, four hundred twenty-one thousand, five hundred forty".