16405706406 has 16 divisors (see below), whose sum is σ = 33942841200. Its totient is φ = 5279997408.

The previous prime is 16405706341. The next prime is 16405706407. The reversal of 16405706406 is 60460750461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16405706407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47142661 + ... + 47143008.

It is an arithmetic number, because the mean of its divisors is an integer number (2121427575).

Almost surely, 2^16405706406 is an apocalyptic number.

16405706406 is an abundant number, since it is smaller than the sum of its proper divisors (17537134794).

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

16405706406 is a wasteful number, since it uses less digits than its factorization.

16405706406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94285703.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 16405706406 in words is "sixteen billion, four hundred five million, seven hundred six thousand, four hundred six".