18872171716853 has 8 divisors (see below), whose sum is σ = 23227288267008. Its totient is φ = 14931828171504.

The previous prime is 18872171716841. The next prime is 18872171716859. The reversal of 18872171716853 is 35861717127881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18872171716853 - 2¹⁰ = 18872171715829 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18872171716853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18872171716859) 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 in 7 ways as a sum of consecutive naturals, for example, 103693251101 + ... + 103693251282.

It is an arithmetic number, because the mean of its divisors is an integer number (2903411033376).

Almost surely, 2^{18872171716853} is an apocalyptic number.

18872171716853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18872171716853 is a deficient number, since it is larger than the sum of its proper divisors (4355116550155).

18872171716853 is a wasteful number, since it uses less digits than its factorization.

18872171716853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207386502403.

The product of its digits is 31610880, while the sum is 65.

The spelling of 18872171716853 in words is "eighteen trillion, eight hundred seventy-two billion, one hundred seventy-one million, seven hundred sixteen thousand, eight hundred fifty-three".