16871521660267 has 4 divisors (see below), whose sum is σ = 16872455922840. Its totient is φ = 16870587397696.

The previous prime is 16871521660247. The next prime is 16871521660277. The reversal of 16871521660267 is 76206612517861.

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 16871521660267 - 2⁷ = 16871521660139 is a prime.

It is a super-2 number, since 2×16871521660267² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16871521660247) 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, 467104198 + ... + 467140315.

It is an arithmetic number, because the mean of its divisors is an integer number (4218113980710).

Almost surely, 2^{16871521660267} is an apocalyptic number.

16871521660267 is a deficient number, since it is larger than the sum of its proper divisors (934262573).

16871521660267 is an equidigital number, since it uses as much as digits as its factorization.

16871521660267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934262572.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 16871521660267 in words is "sixteen trillion, eight hundred seventy-one billion, five hundred twenty-one million, six hundred sixty thousand, two hundred sixty-seven".