16405706448 has 120 divisors (see below), whose sum is σ = 47551885056. Its totient is φ = 5276678400.

The previous prime is 16405706423. The next prime is 16405706453. The reversal of 16405706448 is 84460750461.

16405706448 is a `hidden beast` number, since 16 + 4 + 0 + 570 + 64 + 4 + 8 = 666.

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 23 ways as a sum of consecutive naturals, for example, 463458 + ... + 497598.

Almost surely, 2^16405706448 is an apocalyptic number.

16405706448 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 16405706448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23775942528).

16405706448 is an abundant number, since it is smaller than the sum of its proper divisors (31146178608).

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

16405706448 is a wasteful number, since it uses less digits than its factorization.

16405706448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34273 (or 34264 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 16405706448 in words is "sixteen billion, four hundred five million, seven hundred six thousand, four hundred forty-eight".