16974784906 has 4 divisors (see below), whose sum is σ = 25462177362. Its totient is φ = 8487392452.

The previous prime is 16974784873. The next prime is 16974784961. The reversal of 16974784906 is 60948747961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60948747961 = 19973 ⋅3051557.

It can be written as a sum of positive squares in only one way, i.e., 12776911225 + 4197873681 = 113035^2 + 64791^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4243696225 + ... + 4243696228.

Almost surely, 2^16974784906 is an apocalyptic number.

16974784906 is a deficient number, since it is larger than the sum of its proper divisors (8487392456).

16974784906 is an equidigital number, since it uses as much as digits as its factorization.

16974784906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8487392455.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 16974784906 in words is "sixteen billion, nine hundred seventy-four million, seven hundred eighty-four thousand, nine hundred six".