16673057856 has 504 divisors, whose sum is σ = 60961048512. Its totient is φ = 4242585600.

The previous prime is 16673057809. The next prime is 16673057879. The reversal of 16673057856 is 65875037661.

16673057856 is a `hidden beast` number, since 1 + 6 + 67 + 3 + 0 + 578 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 50371611 + ... + 50371941.

Almost surely, 2^16673057856 is an apocalyptic number.

16673057856 is a gapful number since it is divisible by the number (16) 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 16673057856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30480524256).

16673057856 is an abundant number, since it is smaller than the sum of its proper divisors (44287990656).

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

16673057856 is a wasteful number, since it uses less digits than its factorization.

16673057856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 16673057856 in words is "sixteen billion, six hundred seventy-three million, fifty-seven thousand, eight hundred fifty-six".