16564047675674 has 4 divisors (see below), whose sum is σ = 24846071513514. Its totient is φ = 8282023837836.

The previous prime is 16564047675673. The next prime is 16564047675757. The reversal of 16564047675674 is 47657674046561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9696466627225 + 6867581048449 = 3113915^2 + 2620607^2 .

It is not an unprimeable number, because it can be changed into a prime (16564047675673) by changing a digit.

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, 4141011918917 + ... + 4141011918920.

Almost surely, 2^{16564047675674} is an apocalyptic number.

16564047675674 is a deficient number, since it is larger than the sum of its proper divisors (8282023837840).

16564047675674 is an equidigital number, since it uses as much as digits as its factorization.

16564047675674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8282023837839.

The product of its (nonzero) digits is 711244800, while the sum is 68.

The spelling of 16564047675674 in words is "sixteen trillion, five hundred sixty-four billion, forty-seven million, six hundred seventy-five thousand, six hundred seventy-four".