16405706446 has 8 divisors (see below), whose sum is σ = 25903747080. Its totient is φ = 7771124088.

The previous prime is 16405706423. The next prime is 16405706453. The reversal of 16405706446 is 64460750461.

16405706446 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215864521 + ... + 215864596.

It is an arithmetic number, because the mean of its divisors is an integer number (3237968385).

Almost surely, 2^16405706446 is an apocalyptic number.

16405706446 is a deficient number, since it is larger than the sum of its proper divisors (9498040634).

16405706446 is a wasteful number, since it uses less digits than its factorization.

16405706446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431729138.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 16405706446 in words is "sixteen billion, four hundred five million, seven hundred six thousand, four hundred forty-six".