16318475406 has 64 divisors (see below), whose sum is σ = 38578844160. Its totient is φ = 5095198080.

The previous prime is 16318475377. The next prime is 16318475419. The reversal of 16318475406 is 60457481361.

16318475406 is a `hidden beast` number, since 1 + 63 + 1 + 8 + 47 + 540 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151575 + ... + 235821.

It is an arithmetic number, because the mean of its divisors is an integer number (602794440).

Almost surely, 2^16318475406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16318475406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19289422080).

16318475406 is an abundant number, since it is smaller than the sum of its proper divisors (22260368754).

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

16318475406 is a wasteful number, since it uses less digits than its factorization.

16318475406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84486 (or 84480 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 16318475406 in words is "sixteen billion, three hundred eighteen million, four hundred seventy-five thousand, four hundred six".