16981705504 has 24 divisors (see below), whose sum is σ = 33435750348. Its totient is φ = 8490086400.

The previous prime is 16981705493. The next prime is 16981705577. The reversal of 16981705504 is 40550718961.

It can be written as a sum of positive squares in 2 ways, for example, as 16421909904 + 559795600 = 128148^2 + 23660^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541584 + ... + 572080.

Almost surely, 2^16981705504 is an apocalyptic number.

It is an amenable number.

16981705504 is a deficient number, since it is larger than the sum of its proper divisors (16454044844).

16981705504 is a wasteful number, since it uses less digits than its factorization.

16981705504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47908 (or 47900 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 16981705504 in words is "sixteen billion, nine hundred eighty-one million, seven hundred five thousand, five hundred four".