16667716242271 has 4 divisors (see below), whose sum is σ = 16916488126552. Its totient is φ = 16418944357992.

The previous prime is 16667716242193. The next prime is 16667716242277. The reversal of 16667716242271 is 17224261776661.

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 16667716242271 - 2⁷ = 16667716242143 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 (16667716242277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124385942040 + ... + 124385942173.

It is an arithmetic number, because the mean of its divisors is an integer number (4229122031638).

Almost surely, 2^{16667716242271} is an apocalyptic number.

16667716242271 is a deficient number, since it is larger than the sum of its proper divisors (248771884281).

16667716242271 is an equidigital number, since it uses as much as digits as its factorization.

16667716242271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248771884280.

The product of its digits is 14224896, while the sum is 58.

The spelling of 16667716242271 in words is "sixteen trillion, six hundred sixty-seven billion, seven hundred sixteen million, two hundred forty-two thousand, two hundred seventy-one".