16556242103567 has 4 divisors (see below), whose sum is σ = 17127147003720. Its totient is φ = 15985337203416.

The previous prime is 16556242103539. The next prime is 16556242103573. The reversal of 16556242103567 is 76530124265561.

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

It is a cyclic number.

It is not a de Polignac number, because 16556242103567 - 2⁸ = 16556242103311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16556242103587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285452450033 + ... + 285452450090.

It is an arithmetic number, because the mean of its divisors is an integer number (4281786750930).

Almost surely, 2^{16556242103567} is an apocalyptic number.

16556242103567 is a deficient number, since it is larger than the sum of its proper divisors (570904900153).

16556242103567 is an equidigital number, since it uses as much as digits as its factorization.

16556242103567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570904900152.

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 16556242103567 in words is "sixteen trillion, five hundred fifty-six billion, two hundred forty-two million, one hundred three thousand, five hundred sixty-seven".