16684799406 has 32 divisors (see below), whose sum is σ = 36422863488. Its totient is φ = 5053268640.

The previous prime is 16684799399. The next prime is 16684799437. The reversal of 16684799406 is 60499748661.

It is a self number, because there is not a number n which added to its sum of digits gives 16684799406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56541 + ... + 191223.

It is an arithmetic number, because the mean of its divisors is an integer number (1138214484).

Almost surely, 2^16684799406 is an apocalyptic number.

16684799406 is an abundant number, since it is smaller than the sum of its proper divisors (19738064082).

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

16684799406 is a wasteful number, since it uses less digits than its factorization.

16684799406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136576.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 16684799406 in words is "sixteen billion, six hundred eighty-four million, seven hundred ninety-nine thousand, four hundred six".